QVector< T > Class Template Reference

The QVector class is a template class that provides a dynamic array. More...

#include <qdatastream.h>

Inheritance diagram for QVector< T >:

Public Types
typedef const T *	const_iterator
	The QVector::const_iterator typedef provides an STL-style const iterator for QVector and QStack. More...
typedef const value_type *	const_pointer
	Typedef for const T *. More...
typedef const value_type &	const_reference
	Typedef for T &. More...
typedef const_iterator	ConstIterator
	Qt-style synonym for QVector::const_iterator. More...
typedef qptrdiff	difference_type
	Typedef for ptrdiff_t. More...
typedef T *	iterator
	The QVector::iterator typedef provides an STL-style non-const iterator for QVector and QStack. More...
typedef iterator	Iterator
	Qt-style synonym for QVector::iterator. More...
typedef value_type *	pointer
	Typedef for T *. More...
typedef value_type &	reference
	Typedef for T &. More...
typedef int	size_type
	Typedef for int. More...
typedef T	value_type
	Typedef for T. More...

Public Functions
void	append (const T &t)
	Inserts value at the end of the vector. More...
const T &	at (int i) const
	Returns the item at index position i in the vector. More...
reference	back ()
	This function is provided for STL compatibility. More...
const_reference	back () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
iterator	begin ()
	Returns an STL-style iterator pointing to the first item in the vector. More...
const_iterator	begin () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
int	capacity () const
	Returns the maximum number of items that can be stored in the vector without forcing a reallocation. More...
void	clear ()
	Removes all the elements from the vector and releases the memory used by the vector. More...
const_iterator	constBegin () const
	Returns a const STL-style iterator pointing to the first item in the vector. More...
const T *	constData () const
	Returns a const pointer to the data stored in the vector. More...
const_iterator	constEnd () const
	Returns a const STL-style iterator pointing to the imaginary item after the last item in the vector. More...
bool	contains (const T &t) const
	Returns true if the vector contains an occurrence of value; otherwise returns false. More...
int	count (const T &t) const
	Returns the number of occurrences of value in the vector. More...
int	count () const
	Same as size(). More...
T *	data ()
	Returns a pointer to the data stored in the vector. More...
const T *	data () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
void	detach ()
bool	empty () const
	This function is provided for STL compatibility. More...
iterator	end ()
	Returns an STL-style iterator pointing to the imaginary item after the last item in the vector. More...
const_iterator	end () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
bool	endsWith (const T &t) const
	Returns true if this vector is not empty and its last item is equal to value; otherwise returns false. More...
iterator	erase (iterator begin, iterator end)
	Removes all the items from begin up to (but not including) end. More...
iterator	erase (iterator pos)
	Removes the item pointed to by the iterator pos from the vector, and returns an iterator to the next item in the vector (which may be end()). More...
QVector< T > &	fill (const T &t, int size=-1)
	Assigns value to all items in the vector. More...
T &	first ()
	Returns a reference to the first item in the vector. More...
const T &	first () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
T &	front ()
	This function is provided for STL compatibility. More...
const_reference	front () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
int	indexOf (const T &t, int from=0) const
	Returns the index position of the first occurrence of value in the vector, searching forward from index position from. More...
void	insert (int i, const T &t)
	Inserts value at index position i in the vector. More...
void	insert (int i, int n, const T &t)
	Inserts count copies of value at index position i in the vector. More...
iterator	insert (iterator before, int n, const T &x)
	Inserts count copies of value in front of the item pointed to by the iterator before. More...
iterator	insert (iterator before, const T &x)
	Inserts value in front of the item pointed to by the iterator before. More...
bool	isDetached () const
bool	isEmpty () const
	Returns true if the vector has size 0; otherwise returns false. More...
bool	isSharedWith (const QVector< T > &other) const
T &	last ()
	Returns a reference to the last item in the vector. More...
const T &	last () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
int	lastIndexOf (const T &t, int from=-1) const
	Returns the index position of the last occurrence of the value value in the vector, searching backward from index position from. More...
QVector< T >	mid (int pos, int length=-1) const
	Returns a vector whose elements are copied from this vector, starting at position pos. More...
bool	operator!= (const QVector< T > &v) const
	Returns true if other is not equal to this vector; otherwise returns false. More...
QVector< T >	operator+ (const QVector< T > &l) const
	Returns a vector that contains all the items in this vector followed by all the items in the other vector. More...
QVector< T > &	operator+= (const QVector< T > &l)
	Appends the items of the other vector to this vector and returns a reference to this vector. More...
QVector< T > &	operator+= (const T &t)
	Appends value to the vector. More...
QVector< T > &	operator<< (const QVector< T > &l)
	Appends other to the vector and returns a reference to the vector. More...
QVector< T > &	operator<< (const T &t)
	Appends value to the vector and returns a reference to this vector. More...
QVector< T > &	operator= (const QVector< T > &v)
	Assigns other to this vector and returns a reference to this vector. More...
bool	operator== (const QVector< T > &v) const
	Returns true if other is equal to this vector; otherwise returns false. More...
T &	operator[] (int i)
	Returns the item at index position i as a modifiable reference. More...
const T &	operator[] (int i) const
	Same as at(i). More...
void	pop_back ()
	This function is provided for STL compatibility. More...
void	pop_front ()
	This function is provided for STL compatibility. More...
void	prepend (const T &t)
	Inserts value at the beginning of the vector. More...
void	push_back (const T &t)
	This function is provided for STL compatibility. More...
void	push_front (const T &t)
	This function is provided for STL compatibility. More...
	QVector ()
	Constructs an empty vector. More...
	QVector (int size)
	Constructs a vector with an initial size of size elements. More...
	QVector (int size, const T &t)
	Constructs a vector with an initial size of size elements. More...
	QVector (const QVector< T > &v)
	Constructs a copy of other. More...
void	remove (int i)
	Removes the element at index position i. More...
void	remove (int i, int n)
	Removes count elements from the middle of the vector, starting at index position i. More...
void	replace (int i, const T &t)
	Replaces the item at index position i with value. More...
void	reserve (int size)
	Attempts to allocate memory for at least size elements. More...
void	resize (int size)
	Sets the size of the vector to size. More...
void	setSharable (bool sharable)
int	size () const
	Returns the number of items in the vector. More...
void	squeeze ()
	Releases any memory not required to store the items. More...
bool	startsWith (const T &t) const
	Returns true if this vector is not empty and its first item is equal to value; otherwise returns false. More...
void	swap (QVector< T > &other)
	Swaps vector other with this vector. More...
QList< T >	toList () const
	Returns a QList object with the data contained in this QVector. More...
std::vector< T >	toStdVector () const
	Returns a std::vector object with the data contained in this QVector. More...
T	value (int i) const
	Returns the value at index position i in the vector. More...
T	value (int i, const T &defaultValue) const
	If the index i is out of bounds, the function returns defaultValue. More...
	~QVector ()
	Destroys the vector. More...

Static Public Functions
static QVector< T >	fromList (const QList< T > &list)
	Returns a QVector object with the data contained in list. More...
static QVector< T >	fromStdVector (const std::vector< T > &vector)
	Returns a QVector object with the data contained in vector. More...

Private Types
typedef QVectorTypedData< T >	Data

Private Functions
int	alignOfTypedData () const
void	detach_helper ()
void	free (Data *d)
QVectorData *	malloc (int alloc)
void	realloc (int size, int alloc)
int	sizeOfTypedData ()

Properties
union {
QVectorData *   d
Data *   p
};

Friends
class	QRegion

Related Functions
(Note that these are not member functions.)
QDataStream &	operator<< (QDataStream &out, const QVector< T > &vector)
	Writes the vector vector to stream out. More...
QDataStream &	operator>> (QDataStream &in, QVector< T > &vector)
	Reads a vector from stream in into vector. More...

Detailed Description

template<typename T>
class QVector< T >

The QVector class is a template class that provides a dynamic array.

Note

This class or function is reentrant.

QVector<T> is one of Qt's generic container classes. It stores its items in adjacent memory locations and provides fast index-based access.

QList<T>, QLinkedList<T>, and QVarLengthArray<T> provide similar functionality. Here's an overview:

• For most purposes, QList is the right class to use. Operations like prepend() and insert() are usually faster than with QVector because of the way QList stores its items in memory (see Algorithmic Complexity for details), and its index-based API is more convenient than QLinkedList's iterator-based API. It also expands to less code in your executable.
• If you need a real linked list, with guarantees of constant time insertions in the middle of the list and iterators to items rather than indexes, use QLinkedList.
• If you want the items to occupy adjacent memory positions, or if your items are larger than a pointer and you want to avoid the overhead of allocating them on the heap individually at insertion time, then use QVector.
• If you want a low-level variable-size array, QVarLengthArray may be sufficient.

Here's an example of a QVector that stores integers and a QVector that stores QString values:

QVector<int> integerVector;
QVector<QString> stringVector;

QVector stores a vector (or array) of items. Typically, vectors are created with an initial size. For example, the following code constructs a QVector with 200 elements:

QVector<QString> vector(200);

The elements are automatically initialized with a default-constructed value. If you want to initialize the vector with a different value, pass that value as the second argument to the constructor:

QVector<QString> vector(200, "Pass");

You can also call fill() at any time to fill the vector with a value.

QVector uses 0-based indexes, just like C++ arrays. To access the item at a particular index position, you can use operator[](). On non-const vectors, operator[]() returns a reference to the item that can be used on the left side of an assignment:

if (vector[0] == "Liz")
    vector[0] = "Elizabeth";

For read-only access, an alternative syntax is to use at():

for (int i = 0; i < vector.size(); ++i) {
    if (vector.at(i) == "Alfonso")
        cout << "Found Alfonso at position " << i << endl;
}

at() can be faster than operator[](), because it never causes a deep copy to occur.

Another way to access the data stored in a QVector is to call data(). The function returns a pointer to the first item in the vector. You can use the pointer to directly access and modify the elements stored in the vector. The pointer is also useful if you need to pass a QVector to a function that accepts a plain C++ array.

If you want to find all occurrences of a particular value in a vector, use indexOf() or lastIndexOf(). The former searches forward starting from a given index position, the latter searches backward. Both return the index of the matching item if they found one; otherwise, they return -1. For example:

int i = vector.indexOf("Harumi");
if (i != -1)
    cout << "First occurrence of Harumi is at position " << i << endl;

If you simply want to check whether a vector contains a particular value, use contains(). If you want to find out how many times a particular value occurs in the vector, use count().

QVector provides these basic functions to add, move, and remove items: insert(), replace(), remove(), prepend(), append(). With the exception of append() and replace(), these functions can be slow (linear time) for large vectors, because they require moving many items in the vector by one position in memory. If you want a container class that provides fast insertion/removal in the middle, use QList or QLinkedList instead.

Unlike plain C++ arrays, QVectors can be resized at any time by calling resize(). If the new size is larger than the old size, QVector might need to reallocate the whole vector. QVector tries to reduce the number of reallocations by preallocating up to twice as much memory as the actual data needs.

If you know in advance approximately how many items the QVector will contain, you can call reserve(), asking QVector to preallocate a certain amount of memory. You can also call capacity() to find out how much memory QVector actually allocated.

Note that using non-const operators and functions can cause QVector to do a deep copy of the data. This is due to implicit sharing.

QVector's value type must be an assignable data type. This covers most data types that are commonly used, but the compiler won't let you, for example, store a QWidget as a value; instead, store a QWidget *. A few functions have additional requirements; for example, indexOf() and lastIndexOf() expect the value type to support operator==(). These requirements are documented on a per-function basis.

Like the other container classes, QVector provides Java-style iterators (QVectorIterator and QMutableVectorIterator) and STL-style iterators (QVector::const_iterator and QVector::iterator). In practice, these are rarely used, because you can use indexes into the QVector.

In addition to QVector, Qt also provides QVarLengthArray, a very low-level class with little functionality that is optimized for speed.

QVector does not support inserting, prepending, appending or replacing with references to its own values. Doing so will cause your application to abort with an error message.

See also

QVectorIterator, QMutableVectorIterator, QList, QLinkedList

Definition at line 64 of file qdatastream.h.

Typedefs

const_iterator

template<typename T>

QVector< T >::const_iterator

The QVector::const_iterator typedef provides an STL-style const iterator for QVector and QStack.

QVector provides both STL-style iterators and Java-style iterators. The STL-style const iterator is simply a typedef for "const T *" (pointer to const T).

See also

QVector::constBegin(), QVector::constEnd(), QVector::iterator, QVectorIterator

Definition at line 245 of file qvector.h.

const_pointer

template<typename T>

QVector< T >::const_pointer

Typedef for const T *.

Provided for STL compatibility.

Definition at line 274 of file qvector.h.

const_reference

template<typename T>

QVector< T >::const_reference

Typedef for T &.

Provided for STL compatibility.

Definition at line 276 of file qvector.h.

ConstIterator

template<typename T>

QVector< T >::ConstIterator

Qt-style synonym for QVector::const_iterator.

Definition at line 279 of file qvector.h.

Data

template<typename T>

typedef QVectorTypedData<T> QVector< T >::Data

private

Definition at line 107 of file qvector.h.

difference_type

template<typename T>

QVector< T >::difference_type

Typedef for ptrdiff_t.

Provided for STL compatibility.

Definition at line 277 of file qvector.h.

iterator

template<typename T>

QVector< T >::iterator

The QVector::iterator typedef provides an STL-style non-const iterator for QVector and QStack.

QVector provides both STL-style iterators and Java-style iterators. The STL-style non-const iterator is simply a typedef for "T *" (pointer to T).

See also

QVector::begin(), QVector::end(), QVector::const_iterator, QMutableVectorIterator

Definition at line 244 of file qvector.h.

Iterator

template<typename T>

QVector< T >::Iterator

Qt-style synonym for QVector::iterator.

Definition at line 278 of file qvector.h.

pointer

template<typename T>

QVector< T >::pointer

Typedef for T *.

Provided for STL compatibility.

Definition at line 273 of file qvector.h.

reference

template<typename T>

QVector< T >::reference

Typedef for T &.

Provided for STL compatibility.

Definition at line 275 of file qvector.h.

size_type

template<typename T>

QVector< T >::size_type

Typedef for int.

Provided for STL compatibility.

Definition at line 280 of file qvector.h.

value_type

template<typename T>

QVector< T >::value_type

Typedef for T.

Provided for STL compatibility.

Definition at line 272 of file qvector.h.

Constructors and Destructors

QVector() [1/4]

template<typename T>

QVector< T >::QVector ( )

inline

Constructs an empty vector.

See also

resize()

Definition at line 120 of file qvector.h.

Referenced by QVector< QPoint >::QVector().

: d(&QVectorData::shared_null) { d->ref.ref(); }

QVector() [2/4]

template<typename T >

QVector< T >::QVector ( int  size )

explicit

Constructs a vector with an initial size of size elements.

The elements are initialized with a default-constructed value.

See also

resize()

Definition at line 411 of file qvector.h.

{
    d = malloc(asize);
    d->ref = 1;
    d->alloc = d->size = asize;
    d->sharable = true;
    d->capacity = false;
    if (QTypeInfo<T>::isComplex) {
        T* b = p->array;
        T* i = p->array + d->size;
        while (i != b)
            new (--i) T;
    } else {
        qMemSet(p->array, 0, asize * sizeof(T));
    }
}

QVector() [3/4]

template<typename T>

QVector< T >::QVector	(	int	size,
		const T &	value
	)

Constructs a vector with an initial size of size elements.

Each element is initialized with value.

See also

resize(), fill()

Definition at line 429 of file qvector.h.

{
    d = malloc(asize);
    d->ref = 1;
    d->alloc = d->size = asize;
    d->sharable = true;
    d->capacity = false;
    T* i = p->array + d->size;
    while (i != p->array)
        new (--i) T(t);
}

QVector() [4/4]

template<typename T>

QVector< T >::QVector ( const QVector< T > &  other )

inline

Constructs a copy of other.

This operation takes constant time, because QVector is implicitly shared. This makes returning a QVector from a function very fast. If a shared instance is modified, it will be copied (copy-on-write), and that takes linear time.

See also

operator=()

Definition at line 123 of file qvector.h.

: d(v.d) { d->ref.ref(); if (!d->sharable) detach_helper(); }

~QVector()

template<typename T>

QVector< T >::~QVector ( )

inline

Destroys the vector.

Definition at line 124 of file qvector.h.

{ if (!d) return; if (!d->ref.deref()) free(p); }

Functions

alignOfTypedData()

template<typename T>

int QVector< T >::alignOfTypedData ( ) const

inlineprivate

Definition at line 325 of file qvector.h.

    {
#ifdef Q_ALIGNOF
        return qMax<int>(sizeof(void*), Q_ALIGNOF(Data));
#else
        return 0;
#endif
    }

append()

template<typename T>

void QVector< T >::append

(

const T &

value

)

Inserts value at the end of the vector.

Example:

QVector<QString> vector(0);
vector.append("one");
vector.append("two");
vector.append("three");
// vector: ["one", "two", "three"]

This is the same as calling resize(size() + 1) and assigning value to the new last element in the vector.

This operation is relatively fast, because QVector typically allocates more memory than necessary, so it can grow without reallocating the entire vector each time.

See also

operator<<(), prepend(), insert()

Definition at line 573 of file qvector.h.

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{
    if (d->ref != 1 || d->size + 1 > d->alloc) {
        const T copy(t);
        realloc(d->size, QVectorData::grow(sizeOfTypedData(), d->size + 1, sizeof(T),
                                           QTypeInfo<T>::isStatic));
        if (QTypeInfo<T>::isComplex)
            new (p->array + d->size) T(copy);
        else
            p->array[d->size] = copy;
    } else {
        if (QTypeInfo<T>::isComplex)
            new (p->array + d->size) T(t);
        else
            p->array[d->size] = t;
    }
    ++d->size;
}

at()

template<typename T >

const T & QVector< T >::at ( int  i ) const

inline

Returns the item at index position i in the vector.

i must be a valid index position in the vector (i.e., 0 <= i < size()).

See also

value(), operator[]()

Definition at line 350 of file qvector.h.

Referenced by QFileSystemModelPrivate::_q_fileSystemChanged(), QGraphicsScenePrivate::_q_polishItems(), QSortFilterProxyModelPrivate::_q_sourceDataChanged(), QSortFilterProxyModelPrivate::_q_sourceHeaderDataChanged(), QDeclarativeFastProperties::accessor(), QMenuPrivate::actionAt(), QMenuPrivate::actionRect(), QMetaObject::activate(), QRegExpEngine::Box::addAnchorsToEngine(), QFontDatabasePrivate::addAppFont(), QRegExpEngine::addCatTransitions(), QXmlStreamReader::addExtraNamespaceDeclarations(), QPixmapIconEngine::addFile(), QGridLayoutPrivate::addHfwData(), QPdfEnginePrivate::addImage(), QIconModeViewBase::addLeaf(), QRegExpEngine::addPlusTransitions(), QPainterPath::addPolygon(), QPainterPath::addRegion(), QMenuPrivate::adjustMenuSizeForScreen(), QTreeViewPrivate::adjustViewOptionsForIndex(), QImage::allGray(), QRegExpEngine::anchorAlternation(), QRegExpEngine::anchorConcatenation(), QTextHtmlParserNode::applyCssDeclarations(), QSyntaxHighlighterPrivate::applyFormatChanges(), QFormLayoutPrivate::arrangeWidgets(), QOCIResultPrivate::bindValues(), QAhiScreen::blit(), QTransformedScreen::blit(), blit_template(), QSortFilterProxyModelPrivate::build_source_to_proxy_mapping(), QPatternist::CachingIterator::CachingIterator(), QBoxLayoutPrivate::calcHfw(), QTreeViewPrivate::calcLogicalIndices(), QTextTableData::calcRowPosition(), QFormLayoutPrivate::calcSizeHints(), QScript::callQtMethod(), QSortFilterProxyModelPrivate::can_create_mapping(), QRegionPrivate::canPrepend(), QRegExpEngine::Box::cat(), QRegExpEngine::Box::catAnchor(), QTextTableData::cellPosition(), QGridLayoutPrivate::cellRect(), QTextTableData::cellWidth(), checkGrayscale(), QWinSettingsPrivate::children(), QDesktopWidgetPrivate::cleanup(), QWizardPage::cleanupPage(), QDeclarativePropertyCache::clear(), QTableModel::clear(), QTableModel::clearContents(), closestMatch(), QImage::color(), QTextTableCell::column(), QStandardItemModelPrivate::columnsRemoved(), QPaintBuffer::commandDescription(), QScreen::compose(), QMetaType::construct(), convert_indexed8_to_ARGB_PM_inplace(), convert_indexed8_to_RGB16_inplace(), convert_indexed8_to_RGB_inplace(), convert_Indexed8_to_X32(), convert_Mono_to_X32(), convert_RGB_to_Indexed8(), QPatternist::XsdTypeChecker::convertToQName(), QPatternist::CachingIterator::copy(), QDeclarativePropertyCache::copy(), QDockWidgetLayout::count(), QSqlRecordPrivate::createField(), createPolygonNode(), createPolylineNode(), createSequence(), QFontSubset::createToUnicodeMap(), cubicTo_clipped(), QSqlCachedResult::data(), QODBCResult::data(), QListWidgetItem::data(), QTableWidgetItem::data(), QTreeWidgetItem::data(), declarations(), QCss::StyleSelector::declarationsForNode(), QAbstractItemModel::decodeData(), QPatternist::AccelTree::depth(), QMetaType::destroy(), QWidgetBackingStore::dirtyOnScreenWidgetsRemoveAll(), QWidgetBackingStore::dirtyRegion(), QWidgetBackingStore::dirtyWidgetsRemoveAll(), QPatternist::NamePool::displayName(), QPatternist::NamePool::displayPrefix(), QGridLayoutPrivate::distribute(), distributeMultiBox(), dither_to_Mono(), QTextLayout::draw(), QWindowsXPStylePrivate::drawBackgroundThruNativeBuffer(), QPainter::drawChord(), QTextDocumentLayoutPrivate::drawFrame(), QGraphicsScenePrivate::drawItemHelper(), QBlitterPaintEngine::drawPixmap(), QTreeView::drawRow(), QTextDocumentLayoutPrivate::drawTableCell(), QPainter::drawText(), QTreeView::drawTree(), QAbstractTableModel::dropMimeData(), QAbstractListModel::dropMimeData(), QStandardItemModel::dropMimeData(), AnchorData::dump(), QGridLayoutEngine::dump(), QObject::dumpObjectInfo(), QPatternist::XsdSchemaDebugger::dumpWildcard(), QTextHtmlExporter::emitTable(), QRegion::ensureHandle(), QListModel::ensureSorted(), QTreeModel::ensureSorted(), QTableModel::ensureSorted(), QGLColormap::entryColor(), QGLColormap::entryRgb(), QPatternist::XsdStateMachine< XsdSchemaToken::NodeName >::epsilonClosure(), QPatternist::EvaluationCache< IsForGlobal >::evaluateSequence(), QDB2Result::exec(), QSQLiteResult::exec(), QSymSQLResult::exec(), QODBCResult::exec(), QSqlResult::execBatch(), QScript::QObjectConnectionManager::execute(), QCoreApplication::exit(), QProxyScreen::exposeRegion(), QDirectFBScreen::exposeRegion(), QScreen::exposeRegion(), QWinSettingsPrivate::fileName(), QGL2PaintEngineExPrivate::fill(), QImage::fill(), QVGCompositionHelper::fillBackground(), QX11PaintEnginePrivate::fillPath(), QBlitterPaintEngine::fillRect(), QBlitterPaintEnginePrivate::fillRect(), QVGPaintEngine::fillRegion(), fillRegion(), QGridLayoutEngine::fillRowData(), QGL2PaintEngineExPrivate::fillStencilWithVertexArray(), QSortFilterProxyModelPrivate::filter_changed(), QGLColormap::findNearest(), findRealWindow(), QPatternist::ApplyTemplate::findTemplate(), QRegExpEngine::finishAtom(), fix_color_table(), QDirectFBScreen::flipSurface(), QDirectFbWindowSurface::flush(), QXcbWindowSurface::flush(), QMacWindowSurface::flush(), QWidgetBackingStore::flush(), QGLWindowSurface::flush(), QRasterWindowSurface::flush(), QAlphaPaintEngine::flushAndInit(), QPSPrintEnginePrivate::flushPage(), QTextEngine::format(), QTextEngine::formatIndex(), QPdf::generateDashes(), QWinSettingsPrivate::get(), QVariantAnimationPrivate::getInterpolator(), QFontSubset::getReverseMap(), QGLEngineShaderManager::getUniformLocation(), QSortFilterProxyModelPrivate::handle_filter_changed(), QPathClipper::handleCrossingEdges(), QPatternist::XSLTTokenizer::handleStandardAttributes(), QPatternist::XSLTTokenizer::handleValidationAttributes(), QPatternist::AccelTree::hasChildren(), QPatternist::AccelTree::hasParent(), QPatternist::AccelTree::hasPrefix(), QStyleSheetStyle::hasStyleRule(), QTableModel::headerData(), QHeaderViewPrivate::headerLength(), QHeaderViewPrivate::headerSectionCount(), QRegExpEngine::heuristicallyChooseHeuristic(), QRegExpCharClass::in(), QTableModel::index(), QDesktopWidgetPrivate::init(), QStaticTextPrivate::init(), QConfFileSettingsPrivate::initFormat(), QClipData::initialize(), QTriangulator< T >::initialize(), QSortFilterProxyModelPrivate::insert_source_items(), QSortFilterProxyModel::insertColumns(), QSortFilterProxyModel::insertRows(), QPatternist::XSLTTokenizer::insideSequenceConstructor(), QDirModelPrivate::invalidate(), QFontDatabasePrivate::isApplicationFont(), QXmlSerializer::isBindingInScope(), QWizardPage::isComplete(), QPatternist::AccelTree::isCompressed(), QImage::isGrayscale(), QTreeViewPrivate::isItemHiddenOrDisabled(), QSqlCachedResult::isNull(), QODBCResult::isNull(), QBrush::isOpaque(), QMetaType::isRegistered(), QObjectPrivate::isSender(), QTableModel::item(), QDockWidgetLayout::itemAt(), QListModel::itemData(), QTreeModel::itemData(), QTableModel::itemData(), QDockWidgetLayout::itemForRole(), QPatternist::AccelTree::kind(), QTextDocumentLayoutPrivate::layoutCell(), QTextDocumentLayoutPrivate::layoutTable(), QMetaType::load(), QFontEngineMultiXLFD::loadEngine(), QFontEngineMultiFT::loadEngine(), QFontEngineMultiWin::loadEngine(), QFontEngineMultiQPA::loadEngine(), QFontEngineMultiQWS::loadEngine(), QHeaderViewPrivate::logicalIndex(), ShaderEffectItem::lookThroughShaderCode(), make_widget_eventUPP(), mapProjective(), QRegExpMatchState::matchHere(), QTextFormat::merge(), mergeInto(), QDeclarativePropertyCache::method(), QStandardItemModel::mimeData(), QVNCCursor::move(), QPatternist::XsdStateMachine< XsdSchemaToken::NodeName >::move(), QPatternist::AccelTree::name(), QPatternist::AccelTreeBuilder< true >::namespaceBinding(), QPatternist::AccelTree::namespaceBindings(), QAbstractXmlNodeModel::namespaceForPrefix(), QOleEnumFmtEtc::Next(), qLess< Item::List >::operator()(), operator<<(), operator>>(), QRegExpEngine::Box::orx(), QPatternist::XsdStateMachine< XsdSchemaToken::NodeName >::outputGraph(), QOCIResultPrivate::outValues(), QDeclarativePropertyCache::overrideData(), QDeclarativePaintedItem::paint(), QScreen::paintBackground(), QBlittablePixmapData::paintEngine(), QTableView::paintEvent(), QMdiArea::paintEvent(), QDirModel::parent(), QPatternist::AccelTree::parent(), QRegExpEngine::parse(), parseColorValue(), parseCoreNode(), parseCSStoXMLAttrs(), parseShorthandBackgroundProperty(), parseShorthandFontProperty(), parseStopNode(), QPdf::patternForBrush(), QListModeViewBase::perItemScrollingPageSteps(), QListModeViewBase::perItemScrollToValue(), QImage::pixel(), QStyleSheetStyle::polish(), populate_database(), QPatternist::AccelTree::postNumber(), QPaintBuffer::processCommands(), QDashStroker::processCurrentSubpath(), QDeclarativePropertyCache::property(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items_to_add(), QSortFilterProxyModelPrivate::proxy_item_range(), QSortFilterProxyModelPrivate::proxy_to_source(), q_configFromQPlatformWindowFormat(), q_reduceConfigAttributes(), qBinarySearch(), qCreateParamString(), qDrawPlainRect(), QFontEngineMultiFT::QFontEngineMultiFT(), qGeomCalc(), qMetaTypeCustomType_unlocked(), QOleEnumFmtEtc::QOleEnumFmtEtc(), QPolygonF::QPolygonF(), QRenderRule::QRenderRule(), QSvgAttributes::QSvgAttributes(), qt_adopted_thread_watcher_function(), qt_fetchPixel< QImage::Format_Indexed8 >(), qt_fetchPixel< QImage::Format_Mono >(), qt_fetchPixel< QImage::Format_MonoLSB >(), qt_mac_desktopSize(), qt_mac_fill_background(), qt_mac_post_retranslateAppMenu(), qt_region_strictContains(), QThreadStorageData::QThreadStorageData(), query_colormap(), QPatternist::XSLTTokenizer::queueNamespaceDeclarations(), QVectorPathConverter::QVectorPathData::QVectorPathData(), qVectorToSet(), QRasterPaintEnginePrivate::rasterizeLine_dashed(), QOCICols::readPiecewise(), QGridLayoutPrivate::recalcHFW(), QFormLayoutPrivate::recalcHFW(), QObjectPrivate::receiverList(), QObject::receivers(), QSqlTableModelPrivate::record(), QStateMachinePrivate::registerSignalTransition(), QSortFilterProxyModelPrivate::remove_source_items(), QTableModel::removeColumns(), QSortFilterProxyModel::removeColumns(), QTableModel::removeRows(), QSortFilterProxyModel::removeRows(), QScript::QObjectConnectionManager::removeSignalHandler(), QHeaderViewPrivate::removeSpans(), QStyleSheetStyle::renderRule(), QDesktopWidget::resizeEvent(), QTextEngine::resolveAdditionalFormats(), QGraphicsAnchorLayoutPrivate::restoreSimplifiedAnchor(), QImage::rgbSwapped(), QTextTableCell::row(), QStandardItemModelPrivate::rowsRemoved(), QWindowsFileSystemWatcherEngineThread::run(), QMetaType::save(), QSvgPaintEngine::saveGradientStops(), QTextHtmlImporter::scanTable(), QDirectFbWindowSurface::scroll(), QXcbWindowSurface::scroll(), QXlibWindowSurface::scroll(), QRasterWindowSurface::scroll(), QWSMemorySurface::scroll(), QGraphicsItem::scroll(), QMenuPrivate::scrollMenu(), QWidgetPrivate::scrollRect(), QHeaderViewPrivate::sectionSpanIndex(), QTreeViewPrivate::select(), QPatternist::AccelTree::sendNamespaces(), QAbstractXmlNodeModel::sendNamespaces(), separatorMoveHelper(), QVNCCursor::set(), QClipData::setClipRegion(), QGradient::setColorAt(), QImage::setColorTable(), QPainterPathStroker::setDashPattern(), QListWidgetItem::setData(), QTableWidgetItem::setData(), QTreeWidgetItem::setData(), QMenuPrivate::setFirstActionActive(), setFontFamilyFromValues(), QBoxLayout::setGeometry(), QDockAreaLayout::setGrid(), QTableModel::setHeaderData(), QTableModel::setHorizontalHeaderItem(), QTableModel::setItem(), QTextHtmlParserNode::setListStyle(), QStandardItemPrivate::setModel(), QWizard::setPage(), QPatternist::NamespaceSupport::setPrefixes(), QStyleSheetStyle::setProperties(), QTextFormat::setProperty(), QGradient::setStops(), QCoreGraphicsPaintEnginePrivate::setStrokePen(), setTextDecorationFromValues(), QCosmeticStroker::setup(), QRegExpEngine::Box::setupHeuristics(), QGridLayoutPrivate::setupHfwLayoutData(), QFormLayoutPrivate::setupHfwLayoutData(), QGridLayoutPrivate::setupSpacings(), QTableModel::setVerticalHeaderItem(), QPainter::setViewTransformEnabled(), QPatternist::AccelTree::size(), QTreeView::sizeHintForColumn(), QAhiScreen::solidFill(), QDirectFBScreen::solidFill(), solidFill_template(), QTableModel::sort(), QStandardItemPrivate::sortChildren(), QSortFilterProxyModelPrivate::source_to_proxy(), splitPolygon(), QPatternist::DocumentProjector::startElement(), QWindowsFileSystemWatcherEngineThread::stop(), QPatternist::AccelTreeResourceLoader::streamToReceiver(), QPatternist::NamePool::stringForLocalName(), QPatternist::NamePool::stringForNamespace(), QPatternist::NamePool::stringForPrefix(), QRasterPaintEngine::stroke(), QWidgetBackingStore::sync(), QDockWidgetLayout::takeAt(), QTableModel::takeHorizontalHeaderItem(), QTableModel::takeVerticalHeaderItem(), QPainterPath::toFillPolygons(), QX11PixmapData::toImage(), QPatternist::NamePool::toLexical(), QApplicationPrivate::translateTouchEvent(), QPixmapIconEngine::tryMatch(), QMetaType::typeName(), QStateMachinePrivate::unregisterSignalTransition(), QMetaType::unregisterType(), QOpenGLPaintEngine::updateClipRegion(), QOpenGLPaintEnginePrivate::updateDepthClip(), updateRedirectedToGraphicsProxyWidget(), QGraphicsViewPrivate::updateRegion(), QGraphicsView::updateScene(), QDockAreaLayoutInfo::updateSeparatorWidgets(), QDockAreaLayout::updateSeparatorWidgets(), ShaderEffectItem::updateShaderProgram(), QPdfBaseEngine::updateState(), QDockAreaLayoutInfo::usedSeparatorWidgets(), QDockAreaLayout::usedSeparatorWidgets(), QObject::userData(), QPatternist::XsdValidatingInstanceReader::validateKeyIdentityConstraint(), QMYSQLResult::virtual_hook(), QHeaderViewPrivate::visualIndex(), QWindowsFileSystemWatcherEngineThread::wakeup(), QDockWidgetLayout::widgetForRole(), QTiffHandler::write(), QPixmapIconEngine::write(), QXmlStreamWriter::writeAttributes(), QXmlStreamWriter::writeCurrentToken(), QTextOdfWriter::writeFormats(), QWinSettingsPrivate::writeHandle(), QConfFileSettingsPrivate::writeIniFile(), QPdfEnginePrivate::writePage(), QPatternist::yyparse(), QFontEngineMacMulti::~QFontEngineMacMulti(), QOleEnumFmtEtc::~QOleEnumFmtEtc(), QPaintBufferPrivate::~QPaintBufferPrivate(), QPainterPrivate::~QPainterPrivate(), QPdfEnginePrivate::~QPdfEnginePrivate(), QWidgetBackingStore::~QWidgetBackingStore(), QWindowsFileSystemWatcherEngineThread::~QWindowsFileSystemWatcherEngineThread(), and QWinSettingsPrivate::~QWinSettingsPrivate().

{ Q_ASSERT_X(i >= 0 && i < d->size, "QVector<T>::at", "index out of range");
  return p->array[i]; }

back() [1/2]

template<typename T>

QVector::reference QVector< T >::back ( )

inline

This function is provided for STL compatibility.

It is equivalent to last().

Definition at line 289 of file qvector.h.

Referenced by QSvgText::addText(), QSvgText::draw(), QRBTree< int >::order(), parseStopNode(), and QSvgPaintEngine::saveGradientStops().

{ return last(); }

back() [2/2]

template<typename T>

QVector::const_reference QVector< T >::back ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 290 of file qvector.h.

{ return last(); }

begin() [1/2]

template<typename T>

QVector::iterator QVector< T >::begin ( )

inline

Returns an STL-style iterator pointing to the first item in the vector.

See also

constBegin(), end()

Definition at line 247 of file qvector.h.

Referenced by QFileSystemModelPrivate::_q_fileSystemChanged(), QSortFilterProxyModelPrivate::_q_sourceDataChanged(), QDBusAdaptorConnector::addAdaptor(), QXcbWindowSurface::beginPaint(), QXlibWindowSurface::beginPaint(), QX11WindowSurface::beginPaint(), QRasterWindowSurface::beginPaint(), QWSMemorySurface::beginPaint(), QListViewPrivate::closestIndex(), QPathClipper::doClip(), QTextDocumentLayoutPrivate::drawFlow(), QListModel::ensureSorted(), QTreeModel::ensureSorted(), QTableModel::ensureSorted(), QPatternist::TemplateMode::finalize(), QTextDocumentLayoutPrivate::frameIteratorForYPosition(), QPathClipper::handleCrossingEdges(), huntAndDestroy(), QIconModeViewBase::itemsRect(), QTextDocumentLayoutPrivate::layoutFlow(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items(), qtKey2CocoaKey(), QDBusConnection::registerObject(), QListViewPrivate::removeCurrentAndDisabled(), QSortFilterProxyModel::removeRows(), QListViewPrivate::selection(), QTableModel::setItem(), QVariantAnimationPrivate::setValueAt(), QTableModel::sort(), QSortFilterProxyModelPrivate::sort_source_rows(), QStandardItemPrivate::sortChildren(), splitPolygon(), QDBusConnection::unregisterObject(), QSortFilterProxyModelPrivate::updateChildrenMapping(), and QVariantAnimationPrivate::valueAt().

{ detach(); return p->array; }

begin() [2/2]

template<typename T>

QVector::const_iterator QVector< T >::begin ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 248 of file qvector.h.

{ return p->array; }

capacity()

template<typename T>

int QVector< T >::capacity ( ) const

inline

Returns the maximum number of items that can be stored in the vector without forcing a reallocation.

The sole purpose of this function is to provide a means of fine tuning QVector's memory usage. In general, you will rarely ever need to call this function. If you want to know how many items are in the vector, call size().

See also

reserve(), squeeze()

Definition at line 143 of file qvector.h.

Referenced by QGraphicsViewPrivate::allocStyleOptionsArray().

{ return d->alloc; }

clear()

template<typename T >

void QVector< T >::clear ( )

inline

Removes all the elements from the vector and releases the memory used by the vector.

Definition at line 347 of file qvector.h.

Referenced by QGraphicsScenePrivate::_q_polishItems(), QDeclarativeTextLayout::beginLayout(), QSqlCachedResult::cacheNext(), QSqlCachedResultPrivate::cleanup(), QGraphicsSceneBspTree::clear(), QDeclarativePropertyCache::clear(), QDeclarativeTextLayout::clearLayout(), QTextEngine::clearLineData(), QShortcutMap::clearSequence(), QPatternist::ReturnOrderBy::compress(), QBspTree::destroy(), dither_to_Mono(), QGraphicsScenePrivate::drawItemHelper(), QODBCResult::exec(), QPicture::exec(), QSQLite2ResultPrivate::fetchNext(), QSQLiteResultPrivate::fetchNext(), QShortcutMap::find(), QWidgetBackingStore::flush(), QAlphaPaintEngine::flushAndInit(), QXlibWindow::getNetWmState(), getNetWmState(), QXmlSimpleReaderPrivate::init(), QXmlStreamReaderPrivate::init(), QXmlSimpleReaderPrivate::initData(), QXmlSimpleReaderPrivate::initIncrementalParsing(), QTextEngine::invalidate(), QTextDocumentLayoutPrivate::layoutFlow(), QTextDocumentLayoutPrivate::layoutTable(), QODBCResult::nextResult(), QDesktopWidgetImplementation::onResize(), operator>>(), QXmlStreamReaderPrivate::parse(), QRegExpEngine::parse(), QXmlSimpleReaderPrivate::parseBeginOrContinue(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items_to_add(), qDrawShadePanel(), qt_cleanup_painter_state(), QPixmapIconEngine::read(), QSyntaxHighlighterPrivate::reformatBlocks(), QODBCResult::reset(), ShaderEffectItem::reset(), QTextEngine::resolveAdditionalFormats(), QWizard::setPage(), QGlyphRun::setRawData(), QGradient::setStops(), QPen::setStyle(), QFormLayoutPrivate::setupHfwLayoutData(), QFormLayoutPrivate::setupVerticalLayoutData(), QComboBox::showPopup(), QGraphicsAnchorLayoutPrivate::simplifyGraphIteration(), QWidgetBackingStore::sync(), QPainterPath::toFillPolygons(), QPainterPath::toSubpathPolygons(), QDBusConnection::unregisterObject(), QGraphicsItem::update(), QDockAreaLayoutInfo::updateSeparatorWidgets(), QDBusConnectionPrivate::~QDBusConnectionPrivate(), QFontEngineMacMulti::~QFontEngineMacMulti(), and QOleEnumFmtEtc::~QOleEnumFmtEtc().

{ *this = QVector<T>(); }

constBegin()

template<typename T>

QVector::const_iterator QVector< T >::constBegin ( ) const

inline

Returns a const STL-style iterator pointing to the first item in the vector.

See also

begin(), constEnd()

Definition at line 249 of file qvector.h.

Referenced by QDBusConnectionPrivate::activateObject(), QRegExpEngine::addPlusTransitions(), QAbstractItemModel::changePersistentIndexList(), QPaintEngineEx::clip(), QAbstractItemModelPrivate::columnsInserted(), QAbstractItemModelPrivate::columnsRemoved(), QTextDocumentLayoutPrivate::drawFrame(), QSortFilterProxyModelPrivate::filter_changed(), findObject(), QTextDocumentLayoutPrivate::hitTest(), huntAndEmit(), QRegion::intersects(), QDirIteratorPrivate::matchesFilters(), QAbstractItemModelPrivate::movePersistentIndexes(), QDBusConnection::objectRegisteredAt(), QListView::paintEvent(), qDBusIntrospectObject(), qDBusPropertyGet(), qDBusPropertyGetAll(), qDBusPropertySet(), QScript::QScriptMetaMethod::QScriptMetaMethod(), QVariantAnimationPrivate::recalculateCurrentInterval(), QAbstractItemModelPrivate::rowsInserted(), QAbstractItemModelPrivate::rowsRemoved(), QTextEngine::setBoundary(), QPatternist::variableByName(), and QStandardItemPrivate::~QStandardItemPrivate().

{ return p->array; }

constData()

template<typename T>

const T * QVector< T >::constData ( ) const

inline

Returns a const pointer to the data stored in the vector.

The pointer can be used to access the items in the vector. The pointer remains valid as long as the vector isn't reallocated.

This function is mostly useful to pass a vector to a function that accepts a plain C++ array.

See also

data(), operator[]()

Definition at line 154 of file qvector.h.

Referenced by QRegionPrivate::append(), ShaderEffectItem::bindGeometry(), QTextEngine::boundingBox(), QDeclarativeBindingCompilerPrivate::buildSignalTable(), QRegionPrivate::canAppend(), QRegionPrivate::canPrepend(), QPaintBuffer::commandDescription(), QPainter::drawConvexPolygon(), QPainter::drawLines(), QPainter::drawPoints(), QPainter::drawPolygon(), QPainter::drawPolyline(), QPainter::drawRects(), EqualRegion(), QRasterPaintEngine::fillPolygon(), QGlyphRun::glyphIndexes(), QStaticTextPrivate::init(), isEmptyHelper(), QMatrix::map(), QTransform::map(), mergeInto(), miRegionOp(), miSetExtents(), parseShorthandBackgroundProperty(), QGlyphRun::positions(), QRegionPrivate::prepend(), QDeclarativeBindingCompiler::program(), q_configFromQPlatformWindowFormat(), QDeclarativeGlobalScriptClass::QDeclarativeGlobalScriptClass(), qglx_findConfig(), QOpenKODEWindow::QOpenKODEWindow(), QRegion::QRegion(), qt_adopted_thread_watcher_function(), qt_bitmapToRegion(), qt_regionToPath(), QWaylandGLContext::QWaylandGLContext(), QWaylandReadbackEglContext::QWaylandReadbackEglContext(), QWaylandXCompositeEGLContext::QWaylandXCompositeEGLContext(), RectInRegion(), QWSDisplay::repaintRegion(), QWizardField::resolve(), QWindowsFileSystemWatcherEngineThread::run(), QWSRegionEvent::setData(), QWSRegionCommand::setData(), QWSEmbedCommand::setData(), QOpenKODEWindow::setGeometry(), QGlyphRun::setGlyphIndexes(), QXcbWindow::setNetWmWindowTypes(), QWidgetPrivate::setNetWmWindowTypes(), QGlyphRun::setPositions(), QDBusPendingCallPrivate::setReplyCallback(), QPainter::testRenderHint(), QTextEngine::tightBoundingBox(), and QTextEngine::width().

{ return p->array; }

constEnd()

template<typename T>

QVector::const_iterator QVector< T >::constEnd ( ) const

inline

Returns a const STL-style iterator pointing to the imaginary item after the last item in the vector.

See also

constBegin(), end()

Definition at line 252 of file qvector.h.

Referenced by QDBusConnectionPrivate::activateObject(), QRegExpEngine::addPlusTransitions(), QAbstractItemModel::changePersistentIndexList(), QPaintEngineEx::clip(), QAbstractItemModelPrivate::columnsInserted(), QAbstractItemModelPrivate::columnsRemoved(), QTextDocumentLayoutPrivate::drawFrame(), QSortFilterProxyModelPrivate::filter_changed(), findObject(), QTextDocumentLayoutPrivate::hitTest(), huntAndEmit(), QRegion::intersects(), QDirIteratorPrivate::matchesFilters(), QAbstractItemModelPrivate::movePersistentIndexes(), QDBusConnection::objectRegisteredAt(), QListView::paintEvent(), qDBusIntrospectObject(), qDBusPropertyGet(), qDBusPropertyGetAll(), qDBusPropertySet(), QScript::QScriptMetaMethod::QScriptMetaMethod(), QVariantAnimationPrivate::recalculateCurrentInterval(), QAbstractItemModelPrivate::rowsInserted(), QAbstractItemModelPrivate::rowsRemoved(), QTextEngine::setBoundary(), QVariantAnimationPrivate::valueAt(), QPatternist::variableByName(), and QStandardItemPrivate::~QStandardItemPrivate().

{ return p->array + d->size; }

contains()

template<typename T>

bool QVector< T >::contains

(

const T &

value

)

const

Returns true if the vector contains an occurrence of value; otherwise returns false.

This function requires the value type to have an implementation of operator==().

See also

indexOf(), count()

Definition at line 731 of file qvector.h.

Referenced by QGraphicsAnchorLayoutPrivate::addAnchor(), ShaderEffect::addRenderTarget(), QPatternist::XsdStateMachine< XsdSchemaToken::NodeName >::addTransition(), QWidgetBackingStore::appendDirtyOnScreenWidget(), QPdfEnginePrivate::drawTextItem(), QPdfBaseEnginePrivate::drawTextItem(), QTreeView::drawTree(), QRegExpEngine::dump(), findRealWindow(), QPSPrintEnginePrivate::flushPage(), QPatternist::ComparisonIdentifier::matches(), PointInRegion(), QWindowsFileSystemWatcherEngineThread::run(), send_targets_selection(), QXlibClipboard::sendTargetsSelection(), QXlibWindow::setWindowFlags(), QGraphicsAnchorLayoutPrivate::simplifyGraphIteration(), QGraphicsAnchorLayoutPrivate::simplifyVertices(), QPdfPage::streamImage(), ShaderEffectItem::updateProperties(), and ShaderEffectItem::updateShaderProgram().

{
    T* b = p->array;
    T* i = p->array + d->size;
    while (i != b)
        if (*--i == t)
            return true;
    return false;
}

count() [1/2]

template<typename T>

int QVector< T >::count

(

const T &

value

)

const

Returns the number of occurrences of value in the vector.

This function requires the value type to have an implementation of operator==().

See also

contains(), indexOf()

Definition at line 742 of file qvector.h.

Referenced by QFileSystemModelPrivate::_q_fileSystemChanged(), QGraphicsScenePrivate::_q_polishItems(), QSortFilterProxyModelPrivate::_q_sourceDataChanged(), QMenuPrivate::actionAt(), QDeclarativeFastProperties::add(), QFontDatabasePrivate::addAppFont(), QObjectPrivate::addConnection(), QPixmapIconEngine::addFile(), QIconModeViewBase::addLeaf(), QWindowsFileSystemWatcherEngine::addPaths(), QDeclarativePropertyCache::append(), QTextHtmlParserNode::applyCssDeclarations(), QSyntaxHighlighterPrivate::applyFormatChanges(), QTreeViewPrivate::below(), QOCIResultPrivate::bindValues(), QDeclarativeBindingCompilerPrivate::buildSignalTable(), QBoxLayoutPrivate::calcHfw(), QTreeViewPrivate::calcLogicalIndices(), QTextEngine::calculateTabWidth(), cgColorForQColor(), QObjectPrivate::cleanConnectionLists(), QWizardPage::cleanupPage(), QDeclarativePropertyCache::clear(), QTableModel::clear(), QTableModel::clearContents(), QTableModel::columnCount(), QMetaObjectPrivate::connect(), QSqlRecordPrivate::contains(), QPatternist::XsdTypeChecker::convertToQName(), QVariantAnimationPrivate::convertValues(), QDeclarativePropertyCache::copy(), QDockWidgetLayout::count(), createPolygonNode(), createPolylineNode(), createSequence(), QPatternist::AccelTreeBuilder< true >::currentDepth(), QListWidgetItem::data(), QTableWidgetItem::data(), QTreeWidgetItem::data(), declarations(), QCss::StyleSelector::declarationsForNode(), QAbstractItemModel::decodeData(), QMetaObjectPrivate::disconnect(), QPatternist::DocumentProjector::DocumentProjector(), QListModeViewBase::dragMoveEvent(), ShaderEffect::draw(), QDeclarativeTextLayout::draw(), QWindowsXPStylePrivate::drawBackgroundThruNativeBuffer(), QTreeView::drawRow(), QTreeView::drawTree(), QStandardItemModel::dropMimeData(), QListModeViewBase::dropOn(), AnchorData::dump(), QGridLayoutEngine::dump(), QObject::dumpObjectInfo(), QTextHtmlExporter::emitTable(), QTableModel::ensureSorted(), QPatternist::XsdStateMachine< XsdSchemaToken::NodeName >::epsilonClosure(), QIBaseResult::exec(), QDB2Result::exec(), QSQLiteResult::exec(), QSymSQLResult::exec(), QODBCResult::exec(), QSqlResult::execBatch(), QOCICols::execBatch(), QSQLite2ResultPrivate::fetchNext(), QSQLiteResultPrivate::fetchNext(), QOpenGLPaintEnginePrivate::fillPath(), QGridLayoutEngine::fillRowData(), QPatternist::ApplyTemplate::findTemplate(), QFontEngineMacMulti::fontIndexForFontID(), QGradientCache::generateGradientColorTable(), QGLPathMaskGenerator::generateTrapezoids(), QSortFilterProxyModelPrivate::handle_filter_changed(), QPatternist::XSLTTokenizer::handleStandardAttributes(), QPatternist::XSLTTokenizer::handleValidationAttributes(), QSortFilterProxyModel::hasChildren(), QStyleSheetStyle::hasStyleRule(), QTableModel::headerData(), QHeaderViewPrivate::headerLength(), QHeaderViewPrivate::headerSectionCount(), ShaderEffect::hideOriginal(), QTableModel::index(), QHeaderViewPrivate::initializeIndexMapping(), QTableModel::insertColumns(), QSortFilterProxyModel::insertColumns(), insertOrRemoveItems(), QTableModel::insertRows(), QSortFilterProxyModel::insertRows(), QXmlSimpleReaderPrivate::insertXmlRef(), QPatternist::XSLTTokenizer::insideSequenceConstructor(), QListModeViewBase::intersectingSet(), QDirModelPrivate::invalidate(), QFontDatabasePrivate::isApplicationFont(), QWizardPage::isComplete(), QTreeViewPrivate::isItemHiddenOrDisabled(), QMetaType::isRegistered(), QTableModel::isValid(), QDockWidgetLayout::itemAt(), QListModel::itemData(), QTreeModel::itemData(), QTableModel::itemData(), QTextDocumentLayoutPrivate::layoutTable(), QBspTree::leafCount(), QPatternist::AccelTree::maximumPreNumber(), QTextFormat::merge(), QDeclarativePropertyCache::method(), QTreeWidget::mimeData(), QStandardItemModel::mimeData(), QPatternist::NamePool::NamePool(), QPatternist::AccelTreeBuilder< true >::namespaceBinding(), QOleEnumFmtEtc::Next(), qLess< Item::List >::operator()(), operator<<(), QPatternist::XsdStateMachine< XsdSchemaToken::NodeName >::outputGraph(), QOCIResultPrivate::outValues(), QDeclarativePaintedItem::paint(), QDirModel::parent(), QDeclarativeStyledTextPrivate::parse(), QRegExpEngine::parse(), parseColorValue(), parseCoreNode(), parseCSStoXMLAttrs(), parseShorthandBackgroundProperty(), parseShorthandFontProperty(), parseStopNode(), QListModeViewBase::perItemScrollingPageSteps(), QPixmapIconEngine::pixmap(), QStyleSheetStyle::polish(), QSvgHandler::popColor(), QDeclarativeTextLayout::prepare(), QDeclarativeBindingCompiler::program(), QDeclarativePropertyCache::property(), QSortFilterProxyModelPrivate::proxy_item_range(), QSvgHandler::pushColorCopy(), qCreateParamString(), qMetaTypeCustomType_unlocked(), QOleEnumFmtEtc::QOleEnumFmtEtc(), QRegion::QRegion(), QRenderRule::QRenderRule(), QSvgAttributes::QSvgAttributes(), qt_adopted_thread_watcher_function(), qt_bitmapToRegion(), qt_mac_post_retranslateAppMenu(), QThreadStorageData::QThreadStorageData(), QPatternist::XSLTTokenizer::queueNamespaceDeclarations(), rasterFallbackWarn(), QWSLinuxTPMouseHandlerPrivate::readMouseData(), QVariantAnimationPrivate::recalculateCurrentInterval(), QSqlTableModelPrivate::record(), QTableModel::removeColumns(), QTextTable::removeColumns(), QSortFilterProxyModel::removeColumns(), QTableModel::removeRows(), QSortFilterProxyModel::removeRows(), QStyleSheetStyle::renderRule(), QWSDisplay::repaintRegion(), QXmlSimpleReaderPrivate::reportEndEntities(), QFutureInterface< T >::reportResults(), QWizardField::resolve(), QTextEngine::resolveAdditionalFormats(), QGraphicsAnchorLayoutPrivate::restoreSimplifiedAnchor(), QTableModel::rowCount(), QWindowsFileSystemWatcherEngineThread::run(), QTextHtmlImporter::scanTable(), QTreeView::scrollContentsBy(), QMenuPrivate::scrollMenu(), QHeaderViewPrivate::sectionSpanIndex(), QTreeViewPrivate::select(), QPatternist::XsdValidatingInstanceReader::selectNodeSets(), QWSCalibratedMouseHandler::sendFiltered(), QPatternist::AccelTree::sendNamespaces(), separatorMoveHelper(), QSvgAnimateTransform::setArgs(), QTableModel::setColumnCount(), QListWidgetItem::setData(), QTableWidgetItem::setData(), QTreeWidgetItem::setData(), QWSRegionCommand::setData(), QWSEmbedCommand::setData(), setFontFamilyFromValues(), QBoxLayout::setGeometry(), QTableModel::setHorizontalHeaderItem(), QTableModel::setItem(), QTextHtmlParserNode::setListStyle(), QStandardItemPrivate::setModel(), QXcbWindow::setNetWmWindowTypes(), QWidgetPrivate::setNetWmWindowTypes(), QWizard::setPage(), QVGPaintEnginePrivate::setPenParams(), QPatternist::NamespaceSupport::setPrefixes(), QStyleSheetStyle::setProperties(), QGridLayoutEngine::setRowAlignment(), QTableModel::setRowCount(), QGridLayoutEngine::setRowSizeHint(), QGridLayoutEngine::setRowSpacing(), QGridLayoutEngine::setRowStretchFactor(), QVGCompositionHelper::setScissor(), setTextDecorationFromValues(), QTableModel::setVerticalHeaderItem(), QGraphicsAnchorLayoutPrivate::simplifyGraphIteration(), QTreeView::sizeHintForColumn(), QOleEnumFmtEtc::Skip(), QTableModel::sort(), QStandardItemPrivate::sortChildren(), QSortFilterProxyModelPrivate::source_items_inserted(), QTransform::squareToQuad(), QStyleSheetStyle::styleRules(), QDockWidgetLayout::takeAt(), QTableModel::takeHorizontalHeaderItem(), QTableModel::takeVerticalHeaderItem(), QTextLine::textLength(), QApplicationPrivate::translateTouchEvent(), QPixmapIconEngine::tryMatch(), QPatternist::OrderBy::typeCheck(), QMetaType::typeName(), QPatternist::NamePool::unlockedAllocateLocalName(), QPatternist::NamePool::unlockedAllocateNamespace(), QPatternist::NamePool::unlockedAllocatePrefix(), QMetaType::unregisterType(), QGLContext::updatePaintDevice(), updateRedirectedToGraphicsProxyWidget(), ShaderEffect::updateRenderTargets(), QVGPaintEngine::updateScissor(), QDockAreaLayoutInfo::usedSeparatorWidgets(), QDockAreaLayout::usedSeparatorWidgets(), QPatternist::XsdValidatingInstanceReader::validateKeyIdentityConstraint(), QMYSQLResult::virtual_hook(), QPatternist::yyparse(), QFontEngineMacMulti::~QFontEngineMacMulti(), QObject::~QObject(), and QOleEnumFmtEtc::~QOleEnumFmtEtc().

{
    int c = 0;
    T* b = p->array;
    T* i = p->array + d->size;
    while (i != b)
        if (*--i == t)
            ++c;
    return c;
}

count() [2/2]

template<typename T>

int QVector< T >::count ( ) const

inline

Same as size().

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 259 of file qvector.h.

{ return d->size; }

data() [1/2]

template<typename T>

T * QVector< T >::data ( )

inline

Returns a pointer to the data stored in the vector.

The pointer can be used to access and modify the items in the vector.

Example:

QVector<int> vector(10);
int *data = vector.data();
for (int i = 0; i < 10; ++i)
    data[i] = 2 * i;

The pointer remains valid as long as the vector isn't reallocated.

This function is mostly useful to pass a vector to a function that accepts a plain C++ array.

See also

constData(), operator[]()

Definition at line 152 of file qvector.h.

Referenced by QRawFont::advancesForGlyphIndexes(), QGraphicsViewPrivate::allocStyleOptionsArray(), QRegionPrivate::append(), QScript::callQtMethod(), QX11PaintEnginePrivate::clipPolygon_dev(), QPixmap::clut(), QImageTextureGlyphCache::createTextureData(), QVertexIndexVector::data(), QPainter::drawChord(), QPaintEngine::drawEllipse(), QX11PaintEngine::drawPath(), QOCICols::execBatch(), QOpenGLPaintEnginePrivate::fillPath(), findRealWindow(), flushRow(), QGraphicsViewPrivate::freeStyleOptionsArray(), QX11PixmapData::fromImage(), QGLPathMaskGenerator::generateTrapezoids(), QXlibWindow::getNetWmState(), getNetWmState(), QXcbWindow::glContext(), QXlibWindow::glContext(), QGlyphRun::glyphIndexes(), QRegionPrivate::intersect(), QMatrix::map(), QTransform::map(), QTransformedScreen::mapFromDevice(), QTransformedScreen::mapToDevice(), QRegExpMatchState::matchHere(), mergeInto(), miCoalesce(), miIntersectO(), miRegionOp(), miSubtractNonO1(), miSubtractO(), miUnionNonO(), miUnionO(), OffsetRegion(), QStack< State >::pop(), QGlyphRun::positions(), QDeclarativeTextLayout::prepare(), QRegionPrivate::prepend(), PtsToRegion(), QOpenKODEWindow::QOpenKODEWindow(), qstring_to_xtp(), qt_mac_desktopSize(), send_targets_selection(), QXlibClipboard::sendTargetsSelection(), QWSEmbedEvent::setData(), QOpenKODEWindow::setGeometry(), QCoreGraphicsPaintEnginePrivate::setStrokePen(), QVGPaintEnginePrivate::setupColorRamp(), QPainter::setViewTransformEnabled(), QXlibWindow::setWindowFlags(), QGridLayoutEngine::sizeHint(), QStack< State >::top(), toSQLTCHAR(), QString::toUcs4(), QStringRef::toUcs4(), QApplicationPrivate::translateTouchEvent(), and WinMain().

{ detach(); return p->array; }

data() [2/2]

template<typename T>

const T * QVector< T >::data ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 153 of file qvector.h.

{ return p->array; }

detach()

template<typename T>

void QVector< T >::detach ( )

inline

Warning

This function is not part of the public interface.

Definition at line 147 of file qvector.h.

Referenced by QGLCmap::detach(), and QStack< State >::top().

{ if (d->ref != 1) detach_helper(); }

detach_helper()

template<typename T >

void QVector< T >::detach_helper ( )

private

Definition at line 336 of file qvector.h.

{ realloc(d->size, d->alloc); }

empty()

template<typename T>

bool QVector< T >::empty ( ) const

inline

This function is provided for STL compatibility.

It is equivalent to isEmpty(), returning true if the vector is empty; otherwise returns false.

Definition at line 285 of file qvector.h.

Referenced by QSplitterPrivate::doResize(), QDockAreaLayout::getGrid(), QDirModelPrivate::invalidate(), QToolBarLayout::layoutActions(), QTabBarPrivate::layoutTabs(), QRBTree< int >::order(), qGeomCalc(), QBoxLayoutPrivate::setupGeom(), QFormLayoutPrivate::setupVerticalLayoutData(), and QPdfEnginePrivate::writePage().

    { return d->size == 0; }

end() [1/2]

template<typename T>

QVector::iterator QVector< T >::end ( )

inline

Returns an STL-style iterator pointing to the imaginary item after the last item in the vector.

See also

begin(), constEnd()

Definition at line 250 of file qvector.h.

Referenced by QFileSystemModelPrivate::_q_fileSystemChanged(), QWizardPrivate::_q_handleFieldObjectDestroyed(), QSortFilterProxyModelPrivate::_q_sourceDataChanged(), QDBusAdaptorConnector::addAdaptor(), QRegExpEngine::addPlusTransitions(), QXcbWindowSurface::beginPaint(), QXlibWindowSurface::beginPaint(), QX11WindowSurface::beginPaint(), QRasterWindowSurface::beginPaint(), QWSMemorySurface::beginPaint(), QListViewPrivate::closestIndex(), QPathClipper::doClip(), QTextDocumentLayoutPrivate::drawFlow(), QListModel::ensureSorted(), QTreeModel::ensureSorted(), QTableModel::ensureSorted(), QPatternist::TemplateMode::finalize(), QTextDocumentLayoutPrivate::frameIteratorForYPosition(), QPathClipper::handleCrossingEdges(), huntAndDestroy(), QIconModeViewBase::itemsRect(), QTextDocumentLayoutPrivate::layoutFlow(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items(), qDBusPropertySet(), qtKey2CocoaKey(), QDBusConnection::registerObject(), QListViewPrivate::removeCurrentAndDisabled(), QSortFilterProxyModel::removeRows(), QListViewPrivate::selection(), QTableModel::setItem(), QVariantAnimationPrivate::setValueAt(), QTableModel::sort(), QSortFilterProxyModelPrivate::sort_source_rows(), QStandardItemPrivate::sortChildren(), splitPolygon(), QDBusConnection::unregisterObject(), QSortFilterProxyModelPrivate::updateChildrenMapping(), and QVariantAnimationPrivate::valueAt().

{ detach(); return p->array + d->size; }

end() [2/2]

template<typename T>

QVector::const_iterator QVector< T >::end ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 251 of file qvector.h.

{ return p->array + d->size; }

endsWith()

template<typename T>

bool QVector< T >::endsWith ( const T &  value ) const

inline

Returns true if this vector is not empty and its last item is equal to value; otherwise returns false.

Since

4.5

See also

isEmpty(), last()

Definition at line 265 of file qvector.h.

{ return !isEmpty() && last() == t; }

erase() [1/2]

template<typename T >

Q_TYPENAME QVector< T >::iterator QVector< T >::erase	(	iterator	begin,
		iterator	end
	)

Removes all the items from begin up to (but not including) end.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Returns an iterator to the same item that end referred to before the call.

Definition at line 627 of file qvector.h.

Referenced by QWizardPrivate::_q_handleFieldObjectDestroyed(), QSortFilterProxyModelPrivate::_q_sourceDataChanged(), QListViewPrivate::removeCurrentAndDisabled(), QVariantAnimationPrivate::setValueAt(), and QSortFilterProxyModelPrivate::updateChildrenMapping().

{
    int f = int(abegin - p->array);
    int l = int(aend - p->array);
    int n = l - f;
    detach();
    if (QTypeInfo<T>::isComplex) {
        qCopy(p->array+l, p->array+d->size, p->array+f);
        T *i = p->array+d->size;
        T* b = p->array+d->size-n;
        while (i != b) {
            --i;
            i->~T();
        }
    } else {
        memmove(p->array + f, p->array + l, (d->size-l)*sizeof(T));
    }
    d->size -= n;
    return p->array + f;
}

erase() [2/2]

template<typename T>

QVector::iterator QVector< T >::erase ( iterator  pos )

inline

Removes the item pointed to by the iterator pos from the vector, and returns an iterator to the next item in the vector (which may be end()).

See also

insert(), remove()

Definition at line 256 of file qvector.h.

Referenced by QVector< QPoint >::erase().

{ return erase(pos, pos+1); }

fill()

template<typename T>

QVector< T > & QVector< T >::fill	(	const T &	value,
		int	size = -1
	)

Assigns value to all items in the vector.

If size is different from -1 (the default), the vector is resized to size size beforehand.

Example:

QVector<QString> vector(3);
vector.fill("Yes");
// vector: ["Yes", "Yes", "Yes"]

vector.fill("oh", 5);
// vector: ["oh", "oh", "oh", "oh", "oh"]

See also

resize()

Definition at line 665 of file qvector.h.

Referenced by QRegExpCharClass::addCategories(), QRegExpCharClass::addRange(), QRegExpEngine::Box::Box(), QSortFilterProxyModelPrivate::build_source_to_proxy_mapping(), QTextHtmlExporter::emitTable(), QDB2Result::exec(), QGLEngineShaderManager::getUniformLocation(), QGraphicsSceneBspTree::initialize(), QTextDocumentLayoutPrivate::layoutTable(), QDB2Result::nextResult(), QRegExpCharClass::QRegExpCharClass(), qt_token_info::qt_token_info(), QSyntaxHighlighterPrivate::reformatBlock(), QDB2Result::reset(), QRegExpCharClass::setNegative(), QRegExpEngine::setup(), QRegExpEngine::Box::setupHeuristics(), and QMenuPrivate::updateActionRects().

{
    const T copy(from);
    resize(asize < 0 ? d->size : asize);
    if (d->size) {
        T *i = p->array + d->size;
        T *b = p->array;
        while (i != b)
            *--i = copy;
    }
    return *this;
}

first() [1/2]

template<typename T>

T & QVector< T >::first ( )

inline

Returns a reference to the first item in the vector.

This function assumes that the vector isn't empty.

See also

last(), isEmpty()

Definition at line 260 of file qvector.h.

Referenced by QPainterPath::addPolygon(), QTextEngine::beginningOfLine(), QScript::callQtMethod(), QRegionPrivate::canPrepend(), QPdfBaseEnginePrivate::closePrintDevice(), QListModel::ensureSorted(), QTreeModel::ensureSorted(), QGL2GradientCache::generateGradientColorTable(), QGLGradientCache::generateGradientColorTable(), QGradientCache::generateGradientColorTable(), rasterFallbackWarn(), QFileInfoGatherer::run(), QPatternist::XsdValidatingInstanceReader::selectNodeSets(), SequentialAnchorData::SequentialAnchorData(), QVGPaintEnginePrivate::setupColorRamp(), QGraphicsAnchorLayoutPrivate::simplifyGraphIteration(), QTreeModel::sortItems(), QPainterPath::toFillPolygon(), and QPainterPath::toFillPolygons().

{ Q_ASSERT(!isEmpty()); return *begin(); }

first() [2/2]

template<typename T>

const T & QVector< T >::first ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 261 of file qvector.h.

{ Q_ASSERT(!isEmpty()); return *begin(); }

free()

template<typename T >

void QVector< T >::free ( Data *  d )

private

Definition at line 458 of file qvector.h.

{
    if (QTypeInfo<T>::isComplex) {
        T* b = x->array;
        union { QVectorData *d; Data *p; } u;
        u.p = x;
        T* i = b + u.d->size;
        while (i-- != b)
             i->~T();
    }
    x->free(x, alignOfTypedData());
}

fromList()

template<typename T>

QVector< T > QVector< T >::fromList ( const QList< T > &  list )

static

Returns a QVector object with the data contained in list.

Example:

QStringList list;
list << "Sven" << "Kim" << "Ola";

QVector<QString> vect = QVector<QString>::fromList(list);
// vect: ["Sven", "Kim", "Ola"]

See also

toList(), QList::toVector()

Definition at line 789 of file qvector.h.

Referenced by QDBusPendingCallPrivate::setReplyCallback().

{
    return list.toVector();
}

fromStdVector()

template<typename T>

QVector< T > QVector< T >::fromStdVector ( const std::vector< T > &  vector )

inlinestatic

Returns a QVector object with the data contained in vector.

The order of the elements in the QVector is the same as in vector.

Example:

std::vector<double> stdvector;
vector.push_back(1.2);
vector.push_back(0.5);
vector.push_back(3.14);

QVector<double> vector = QVector<double>::fromStdVector(stdvector);

See also

toStdVector(), QList::fromStdList()

Definition at line 308 of file qvector.h.

    { QVector<T> tmp; tmp.reserve(int(vector.size())); qCopy(vector.begin(), vector.end(), std::back_inserter(tmp)); return tmp; }

front() [1/2]

template<typename T>

T & QVector< T >::front ( )

inline

This function is provided for STL compatibility.

It is equivalent to first().

Definition at line 287 of file qvector.h.

Referenced by QSvgText::draw().

{ return first(); }

front() [2/2]

template<typename T>

QVector::const_reference QVector< T >::front ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 288 of file qvector.h.

{ return first(); }

indexOf()

template<typename T>

int QVector< T >::indexOf	(	const T &	value,
		int	from = 0
	)		const

Returns the index position of the first occurrence of value in the vector, searching forward from index position from.

Returns -1 if no item matched.

Example:

QVector<QString> vector;
vector << "A" << "B" << "C" << "B" << "A";
vector.indexOf("B");            // returns 1
vector.indexOf("B", 1);         // returns 1
vector.indexOf("B", 2);         // returns 3
vector.indexOf("X");            // returns -1

This function requires the value type to have an implementation of operator==().

See also

lastIndexOf(), contains()

Definition at line 698 of file qvector.h.

Referenced by QPdfEnginePrivate::addConstantAlphaObject(), QStandardItemPrivate::childIndex(), QGLColormap::find(), QTableModel::index(), QTableModel::itemChanged(), QStandardItemModelPrivate::itemChanged(), q_configFromQPlatformWindowFormat(), q_reduceConfigAttributes(), QBspTree::remove(), QGraphicsAnchorLayoutPrivate::removeAnchor(), QTableModel::removeItem(), QGraphicsScenePrivate::removeItemHelper(), QWindowsFileSystemWatcherEngine::removePaths(), ShaderEffect::removeRenderTarget(), and QWindowsFileSystemWatcherEngineThread::run().

{
    if (from < 0)
        from = qMax(from + d->size, 0);
    if (from < d->size) {
        T* n = p->array + from - 1;
        T* e = p->array + d->size;
        while (++n != e)
            if (*n == t)
                return n - p->array;
    }
    return -1;
}

insert() [1/4]

template<typename T>

void QVector< T >::insert ( int  i, const T &  value  )

inline

Inserts value at index position i in the vector.

If i is 0, the value is prepended to the vector. If i is size(), the value is appended to the vector.

Example:

QVector<QString> vector;
vector << "alpha" << "beta" << "delta";
vector.insert(2, "gamma");
// vector: ["alpha", "beta", "gamma", "delta"]

For large vectors, this operation can be slow (linear time), because it requires moving all the items at indexes i and above by one position further in memory. If you want a container class that provides a fast insert() function, use QLinkedList instead.

See also

append(), prepend(), remove()

Definition at line 362 of file qvector.h.

Referenced by QStandardItemModelPrivate::columnsInserted(), convert_indexed8_to_ARGB_PM_inplace(), convert_indexed8_to_RGB_inplace(), QTableModel::ensureSorted(), QNetworkAuthenticationCache::insert(), QSortFilterProxyModelPrivate::insert_source_items(), QTableModel::insertColumns(), QTextTable::insertColumns(), QTreeModel::insertColumns(), insertOrRemoveItems(), QTableModel::insertRows(), ShaderEffectItem::lookThroughShaderCode(), operator>>(), QDBusConnection::registerObject(), QStandardItemModelPrivate::rowsInserted(), QGradient::setColorAt(), QTableModel::setItem(), QVariantAnimationPrivate::setValueAt(), QSortFilterProxyModelPrivate::source_items_inserted(), and QTextEngine::splitItem().

{ Q_ASSERT_X(i >= 0 && i <= d->size, "QVector<T>::insert", "index out of range");
  insert(begin() + i, 1, t); }

insert() [2/4]

template<typename T>

void QVector< T >::insert ( int  i, int  count, const T &  value  )

inline

Inserts count copies of value at index position i in the vector.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Example:

QVector<double> vector;
vector << 2.718 << 1.442 << 0.4342;
vector.insert(1, 3, 9.9);
// vector: [2.718, 9.9, 9.9, 9.9, 1.442, 0.4342]

Definition at line 366 of file qvector.h.

{ Q_ASSERT_X(i >= 0 && i <= d->size, "QVector<T>::insert", "index out of range");
  insert(begin() + i, n, t); }

insert() [3/4]

template<typename T>

Q_TYPENAME QVector< T >::iterator QVector< T >::insert	(	iterator	before,
		int	count,
		const T &	value
	)

Inserts count copies of value in front of the item pointed to by the iterator before.

Returns an iterator pointing at the first of the inserted items.

Definition at line 593 of file qvector.h.

{
    int offset = int(before - p->array);
    if (n != 0) {
        const T copy(t);
        if (d->ref != 1 || d->size + n > d->alloc)
            realloc(d->size, QVectorData::grow(sizeOfTypedData(), d->size + n, sizeof(T),
                                               QTypeInfo<T>::isStatic));
        if (QTypeInfo<T>::isStatic) {
            T *b = p->array + d->size;
            T *i = p->array + d->size + n;
            while (i != b)
                new (--i) T;
            i = p->array + d->size;
            T *j = i + n;
            b = p->array + offset;
            while (i != b)
                *--j = *--i;
            i = b+n;
            while (i != b)
                *--i = copy;
        } else {
            T *b = p->array + offset;
            T *i = b + n;
            memmove(i, b, (d->size - offset) * sizeof(T));
            while (i != b)
                new (--i) T(copy);
        }
        d->size += n;
    }
    return p->array + offset;
}

insert() [4/4]

template<typename T>

QVector::iterator QVector< T >::insert ( iterator  before, const T &  value  )

inline

Inserts value in front of the item pointed to by the iterator before.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Returns an iterator pointing at the inserted item.

Definition at line 254 of file qvector.h.

Referenced by QVector< QPoint >::insert().

{ return insert(before, 1, x); }

isDetached()

template<typename T>

bool QVector< T >::isDetached ( ) const

inline

Warning

This function is not part of the public interface.

Definition at line 148 of file qvector.h.

{ return d->ref == 1; }

isEmpty()

template<typename T>

bool QVector< T >::isEmpty ( ) const

inline

Returns true if the vector has size 0; otherwise returns false.

See also

size(), resize()

Definition at line 139 of file qvector.h.

Referenced by QGraphicsScenePrivate::_q_polishItems(), QSortFilterProxyModelPrivate::_q_sourceDataChanged(), QPainterPath::addPolygon(), QDirIteratorPrivate::advance(), QImage::allGray(), QProxyFontEngine::alphaMapForGlyph(), QTextDocumentPrivate::appendUndoItem(), QPaintBufferEngine::brushChanged(), QCss::StyleSheet::buildIndexes(), QScript::callQtMethod(), QSvgHandler::characters(), cleanupDeletedNodes(), QTextDocumentPrivate::clearUndoRedoStacks(), QTreeWidgetItem::clone(), QTextHtmlImporter::closeTag(), convert_indexed8_to_RGB16_inplace(), convert_RGB_to_Indexed8(), QPainterPathStroker::createStroke(), QSvgHandler::currentColor(), QPatternist::AccelTreeBuilder< true >::currentParent(), QPen::dashPattern(), QGraphicsSceneBspTree::debug(), QTextDocumentLayoutPrivate::drawFlow(), QGraphicsScenePrivate::drawItemHelper(), QTextHtmlExporter::emitTable(), QSvgHandler::endElement(), QCoreApplication::exec(), QOCICols::execBatch(), QWinSettingsPrivate::fileName(), findObject(), QWidgetBackingStore::flush(), QTextEngine::format(), QTextEngine::formatIndex(), QTextDocumentLayoutPrivate::frameIteratorForYPosition(), QWindowsAccessible::get_accSelection(), QXlibWindow::getNetWmState(), getNetWmState(), QGLEngineShaderManager::getUniformLocation(), QSortFilterProxyModelPrivate::handle_filter_changed(), QPathClipper::handleCrossingEdges(), QDirIterator::hasNext(), QCoreApplication::hasPendingEvents(), QStyleSheetStyle::hasStyleRule(), QSpanData::initTexture(), QTreeWidgetItem::insertChild(), QTreeWidgetItem::insertChildren(), QTextTable::insertColumns(), QTreeModel::insertColumns(), QPaintBuffer::isEmpty(), QDeclarativeBindingCompiler::isValid(), QTreeView::keyPressEvent(), QTextDocumentLayoutPrivate::layoutFlow(), Document::load(), QHeaderViewPrivate::logicalIndex(), QWidgetBackingStore::markDirty(), QStandardItemModel::mimeData(), miSetExtents(), QListView::moveCursor(), QPatternist::PullBridge::next(), StringSplitter::next(), QPatternist::XQueryTokenizer::nextToken(), QXmlSimpleReaderPrivate::parseAttlistDecl(), QXmlSimpleReaderPrivate::parseAttribute(), QXmlSimpleReaderPrivate::parseAttType(), QXmlSimpleReaderPrivate::parseAttValue(), QXmlSimpleReaderPrivate::parseBeginOrContinue(), QXmlSimpleReaderPrivate::parseChoiceSeq(), QXmlSimpleReaderPrivate::parseComment(), QXmlSimpleReaderPrivate::parseContent(), QXmlSimpleReaderPrivate::parseDoctype(), QXmlSimpleReaderPrivate::parseElement(), QXmlSimpleReaderPrivate::parseElementDecl(), QXmlSimpleReaderPrivate::parseEntityDecl(), QXmlSimpleReaderPrivate::parseEntityValue(), QXmlSimpleReaderPrivate::parseExternalID(), QXmlSimpleReaderPrivate::parseMarkupdecl(), QXmlSimpleReaderPrivate::parseMisc(), QXmlSimpleReaderPrivate::parseName(), QXmlSimpleReaderPrivate::parseNmtoken(), QXmlSimpleReaderPrivate::parseNotationDecl(), QXmlSimpleReaderPrivate::parsePEReference(), QXmlSimpleReaderPrivate::parsePI(), QXmlSimpleReaderPrivate::parseProlog(), QXmlSimpleReaderPrivate::parseReference(), QXmlSimpleReaderPrivate::parseString(), QPaintBufferEngine::penChanged(), QListModeViewBase::perItemScrollingPageSteps(), QPixmapIconEngine::pixmap(), QStack< State >::pop(), QPatternist::XQueryTokenizer::popState(), QTreeWidgetItemPrivate::propagateDisabled(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items_to_add(), qCreateParamString(), qDrawPlainRect(), qLess< Item::List >::qLess(), qstring_to_xtp(), QPatternist::XSLTTokenizer::queueOnExit(), QWinSettingsPrivate::QWinSettingsPrivate(), QDBusConnection::registerObject(), QTextEngine::resolveAdditionalFormats(), QFileInfoGatherer::run(), QTreeViewPrivate::select(), QPatternist::AccelTree::sendNamespaces(), QAbstractXmlNodeModel::sendNamespaces(), QPen::setDashPattern(), QTreeWidgetItem::setFlags(), QStandardItemPrivate::setModel(), QWidgetPrivate::setNetWmWindowTypes(), QPdf::Stroker::setPen(), QListView::setSelection(), QCosmeticStroker::setup(), QXlibWindow::setWindowFlags(), QComboBox::showPopup(), QGraphicsAnchorLayoutPrivate::simplifyGraph(), QGraphicsAnchorLayoutPrivate::simplifyGraphIteration(), QGraphicsAnchorLayoutPrivate::simplifyVertices(), QPatternist::SortTuple::SortTuple(), QSvgHandler::startElement(), QGradient::stops(), QPatternist::AccelTreeResourceLoader::streamToReceiver(), QTreeWidgetItem::takeChild(), QTreeWidgetItem::takeChildren(), QStack< State >::top(), QPaintBufferEngine::transformChanged(), QHeaderViewPrivate::visualIndex(), QFontSubset::widthArray(), and QWinSettingsPrivate::writeHandle().

{ return d->size == 0; }

isSharedWith()

template<typename T>

bool QVector< T >::isSharedWith ( const QVector< T > &  other ) const

inline

Warning

This function is not part of the public interface.

Definition at line 150 of file qvector.h.

{ return d == other.d; }

last() [1/2]

template<typename T>

T & QVector< T >::last ( )

inline

Returns a reference to the last item in the vector.

This function assumes that the vector isn't empty.

See also

first(), isEmpty()

Definition at line 262 of file qvector.h.

Referenced by QPaintBufferEngine::brushChanged(), createSequence(), QListModeViewBase::dragMoveEvent(), QTextDocumentLayoutPrivate::drawFlow(), QListModeViewBase::dropOn(), QTextEngine::endOfLine(), QTextDocumentLayoutPrivate::layoutFlow(), QTextDocumentLayoutPrivate::layoutTable(), QPaintBufferEngine::penChanged(), QListModeViewBase::perItemScrollingPageSteps(), QTextHtmlImporter::processBlockNode(), QTest::qExec(), SequentialAnchorData::SequentialAnchorData(), QListView::setSelection(), QGraphicsAnchorLayoutPrivate::simplifyGraphIteration(), QPaintBufferEngine::transformChanged(), QPdfEnginePrivate::writePage(), and QPdfEnginePrivate::writeTail().

{ Q_ASSERT(!isEmpty()); return *(end()-1); }

last() [2/2]

template<typename T>

const T & QVector< T >::last ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 263 of file qvector.h.

{ Q_ASSERT(!isEmpty()); return *(end()-1); }

lastIndexOf()

template<typename T>

int QVector< T >::lastIndexOf	(	const T &	value,
		int	from = -1
	)		const

Returns the index position of the last occurrence of the value value in the vector, searching backward from index position from.

If from is -1 (the default), the search starts at the last item. Returns -1 if no item matched.

Example:

QList<QString> vector;
vector << "A" << "B" << "C" << "B" << "A";
vector.lastIndexOf("B");        // returns 3
vector.lastIndexOf("B", 3);     // returns 3
vector.lastIndexOf("B", 2);     // returns 1
vector.lastIndexOf("X");        // returns -1

This function requires the value type to have an implementation of operator==().

See also

indexOf()

Definition at line 713 of file qvector.h.

Referenced by QStandardItemPrivate::childIndex().

{
    if (from < 0)
        from += d->size;
    else if (from >= d->size)
        from = d->size-1;
    if (from >= 0) {
        T* b = p->array;
        T* n = p->array + from + 1;
        while (n != b) {
            if (*--n == t)
                return n - b;
        }
    }
    return -1;
}

malloc()

template<typename T >

QVectorData * QVector< T >::malloc ( int  alloc )

inlineprivate

Definition at line 403 of file qvector.h.

{
    QVectorData *vectordata = QVectorData::allocate(sizeOfTypedData() + (aalloc - 1) * sizeof(T), alignOfTypedData());
    Q_CHECK_PTR(vectordata);
    return vectordata;
}

mid()

template<typename T >

Q_OUTOFLINE_TEMPLATE QVector< T > QVector< T >::mid	(	int	pos,
		int	length = -1
	)		const

Returns a vector whose elements are copied from this vector, starting at position pos.

If length is -1 (the default), all elements after pos are copied; otherwise length elements (or all remaining elements if there are less than length elements) are copied.

Definition at line 754 of file qvector.h.

{
    if (length < 0)
        length = size() - pos;
    if (pos == 0 && length == size())
        return *this;
    if (pos + length > size())
        length = size() - pos;
    QVector<T> copy;
    copy.reserve(length);
    for (int i = pos; i < pos + length; ++i)
        copy += at(i);
    return copy;
}

operator!=()

template<typename T>

bool QVector< T >::operator!= ( const QVector< T > &  other ) const

inline

Returns true if other is not equal to this vector; otherwise returns false.

Two vectors are considered equal if they contain the same values in the same order.

This function requires the value type to have an implementation of operator==().

See also

operator==()

Definition at line 135 of file qvector.h.

{ return !(*this == v); }

operator+()

template<typename T>

QVector< T > QVector< T >::operator+ ( const QVector< T > &  other ) const

inline

Returns a vector that contains all the items in this vector followed by all the items in the other vector.

See also

operator+=()

Definition at line 294 of file qvector.h.

    { QVector n = *this; n += l; return n; }

operator+=() [1/2]

template<typename T>

QVector< T > & QVector< T >::operator+=

(

const QVector< T > &

other

)

Appends the items of the other vector to this vector and returns a reference to this vector.

See also

operator+(), append()

Definition at line 679 of file qvector.h.

{
    int newSize = d->size + l.d->size;
    realloc(d->size, newSize);

    T *w = p->array + newSize;
    T *i = l.p->array + l.d->size;
    T *b = l.p->array;
    while (i != b) {
        if (QTypeInfo<T>::isComplex)
            new (--w) T(*--i);
        else
            *--w = *--i;
    }
    d->size = newSize;
    return *this;
}

operator+=() [2/2]

template<typename T>

void QVector< T >::operator+= ( const T &  value )

inline

Appends value to the vector.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

See also

append(), operator<<()

Definition at line 296 of file qvector.h.

    { append(t); return *this; }

operator<<() [1/2]

template<typename T>

QVector< T > & QVector< T >::operator<< ( const T &  value )

inline

Appends value to the vector and returns a reference to this vector.

See also

append(), operator+=()

Definition at line 298 of file qvector.h.

    { append(t); return *this; }

operator<<() [2/2]

template<typename T>

QVector< T > & QVector< T >::operator<< ( const QVector< T > &  l )

inline

Appends other to the vector and returns a reference to the vector.

Definition at line 300 of file qvector.h.

    { *this += l; return *this; }

operator=()

template<typename T>

QVector< T > & QVector< T >::operator=

(

const QVector< T > &

v

)

Assigns other to this vector and returns a reference to this vector.

Definition at line 390 of file qvector.h.

{
    QVectorData *o = v.d;
    o->ref.ref();
    if (!d->ref.deref())
        free(p);
    d = o;
    if (!d->sharable)
        detach_helper();
    return *this;
}

operator==()

template<typename T>

bool QVector< T >::operator==

(

const QVector< T > &

other

)

const

Returns true if other is equal to this vector; otherwise returns false.

Two vectors are considered equal if they contain the same values in the same order.

This function requires the value type to have an implementation of operator==().

See also

operator!=()

Definition at line 649 of file qvector.h.

{
    if (d->size != v.d->size)
        return false;
    if (d == v.d)
        return true;
    T* b = p->array;
    T* i = b + d->size;
    T* j = v.p->array + d->size;
    while (i != b)
        if (!(*--i == *--j))
            return false;
    return true;
}

operator[]() [1/2]

template<typename T >

T & QVector< T >::operator[] ( int  i )

inline

Returns the item at index position i as a modifiable reference.

i must be a valid index position in the vector (i.e., 0 <= i < size()).

Note that using non-const operators can cause QVector to do a deep copy.

See also

at(), value()

Definition at line 358 of file qvector.h.

Referenced by QObjectConnectionListVector::operator[]().

{ Q_ASSERT_X(i >= 0 && i < d->size, "QVector<T>::operator[]", "index out of range");
  return data()[i]; }

operator[]() [2/2]

template<typename T >

const T & QVector< T >::operator[] ( int  i ) const

inline

Same as at(i).

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 354 of file qvector.h.

{ Q_ASSERT_X(i >= 0 && i < d->size, "QVector<T>::operator[]", "index out of range");
  return p->array[i]; }

pop_back()

template<typename T>

void QVector< T >::pop_back ( )

inline

This function is provided for STL compatibility.

It is equivalent to erase(end() - 1).

Definition at line 283 of file qvector.h.

Referenced by QXmlSimpleReaderPrivate::next(), QRBTree< int >::order(), QXmlSimpleReaderPrivate::processElementEmptyTag(), and QXmlSimpleReaderPrivate::reportEndEntities().

{ Q_ASSERT(!isEmpty()); erase(end()-1); }

pop_front()

template<typename T>

void QVector< T >::pop_front ( )

inline

This function is provided for STL compatibility.

It is equivalent to erase(begin()).

Definition at line 284 of file qvector.h.

Referenced by QFileInfoGatherer::run().

{ Q_ASSERT(!isEmpty()); erase(begin()); }

prepend()

template<typename T>

void QVector< T >::prepend ( const T &  value )

inline

Inserts value at the beginning of the vector.

Example:

QVector<QString> vector;
vector.prepend("one");
vector.prepend("two");
vector.prepend("three");
// vector: ["three", "two", "one"]

This is the same as vector.insert(0, value).

For large vectors, this operation can be slow (linear time), because it requires moving all the items in the vector by one position further in memory. If you want a container class that provides a fast prepend() function, use QList or QLinkedList instead.

See also

append(), insert()

Definition at line 378 of file qvector.h.

Referenced by QScript::callQtMethod(), QPatternist::XQueryTokenizer::nextToken(), QRegionPrivate::prepend(), and qt_watch_adopted_thread().

{ insert(begin(), 1, t); }

push_back()

template<typename T>

void QVector< T >::push_back ( const T &  value )

inline

This function is provided for STL compatibility.

It is equivalent to append(value).

Definition at line 281 of file qvector.h.

Referenced by QTriangulator< T >::MonotoneToTriangles::decompose(), QSvgText::draw(), QSortFilterProxyModelPrivate::filter_changed(), QTriangulator< T >::initialize(), QTextEngine::insertionPointsForLine(), and QRBTree< int >::order().

{ append(t); }

push_front()

template<typename T>

void QVector< T >::push_front ( const T &  value )

inline

This function is provided for STL compatibility.

It is equivalent to prepend(value).

Definition at line 282 of file qvector.h.

{ prepend(t); }

realloc()

template<typename T >

void QVector< T >::realloc ( int  size, int  alloc  )

private

Definition at line 472 of file qvector.h.

{
    Q_ASSERT(asize <= aalloc);
    T *pOld;
    T *pNew;
    union { QVectorData *d; Data *p; } x;
    x.d = d;

    if (QTypeInfo<T>::isComplex && asize < d->size && d->ref == 1 ) {
        // call the destructor on all objects that need to be
        // destroyed when shrinking
        pOld = p->array + d->size;
        pNew = p->array + asize;
        while (asize < d->size) {
            (--pOld)->~T();
            d->size--;
        }
    }

    if (aalloc != d->alloc || d->ref != 1) {
        // (re)allocate memory
        if (QTypeInfo<T>::isStatic) {
            x.d = malloc(aalloc);
            Q_CHECK_PTR(x.p);
            x.d->size = 0;
        } else if (d->ref != 1) {
            x.d = malloc(aalloc);
            Q_CHECK_PTR(x.p);
            if (QTypeInfo<T>::isComplex) {
                x.d->size = 0;
            } else {
                ::memcpy(x.p, p, sizeOfTypedData() + (qMin(aalloc, d->alloc) - 1) * sizeof(T));
                x.d->size = d->size;
            }
        } else {
            QT_TRY {
                QVectorData *mem = QVectorData::reallocate(d, sizeOfTypedData() + (aalloc - 1) * sizeof(T),
                                                           sizeOfTypedData() + (d->alloc - 1) * sizeof(T), alignOfTypedData());
                Q_CHECK_PTR(mem);
                x.d = d = mem;
                x.d->size = d->size;
            } QT_CATCH (const std::bad_alloc &) {
                if (aalloc > d->alloc) // ignore the error in case we are just shrinking.
                    QT_RETHROW;
            }
        }
        x.d->ref = 1;
        x.d->alloc = aalloc;
        x.d->sharable = true;
        x.d->capacity = d->capacity;
        x.d->reserved = 0;
    }

    if (QTypeInfo<T>::isComplex) {
        QT_TRY {
            pOld = p->array + x.d->size;
            pNew = x.p->array + x.d->size;
            // copy objects from the old array into the new array
            const int toMove = qMin(asize, d->size);
            while (x.d->size < toMove) {
                new (pNew++) T(*pOld++);
                x.d->size++;
            }
            // construct all new objects when growing
            while (x.d->size < asize) {
                new (pNew++) T;
                x.d->size++;
            }
        } QT_CATCH (...) {
            free(x.p);
            QT_RETHROW;
        }

    } else if (asize > x.d->size) {
        // initialize newly allocated memory to 0
        qMemSet(x.p->array + x.d->size, 0, (asize - x.d->size) * sizeof(T));
    }
    x.d->size = asize;

    if (d != x.d) {
        if (!d->ref.deref())
            free(p);
        d = x.d;
    }
}

remove() [1/2]

template<typename T >

void QVector< T >::remove ( int  i )

inline

Removes the element at index position i.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

See also

insert(), replace(), fill()

Definition at line 374 of file qvector.h.

Referenced by QGraphicsScenePrivate::_q_polishItems(), QTextDocumentPrivate::clearUndoRedoStacks(), QStandardItemModelPrivate::columnsRemoved(), QWidgetBackingStore::dirtyOnScreenWidgetsRemoveAll(), QWidgetBackingStore::dirtyWidgetsRemoveAll(), QTableModel::ensureSorted(), QSortFilterProxyModelPrivate::filter_changed(), insertOrRemoveItems(), QPixmapIconEngine::pixmap(), q_reduceConfigAttributes(), qt_adopted_thread_watcher_function(), QBspTree::remove(), QSortFilterProxyModelPrivate::remove_proxy_interval(), QTableModel::removeColumns(), QTextTable::removeColumns(), QWindowsFileSystemWatcherEngine::removePaths(), ShaderEffect::removeRenderTarget(), QTableModel::removeRows(), QScript::QObjectConnectionManager::removeSignalHandler(), QHeaderViewPrivate::removeSpans(), QStandardItemModelPrivate::rowsRemoved(), QWindowsFileSystemWatcherEngineThread::run(), QTableModel::setItem(), QGraphicsAnchorLayoutPrivate::simplifyGraphIteration(), and QSortFilterProxyModelPrivate::source_items_removed().

{ Q_ASSERT_X(i >= 0 && i < d->size, "QVector<T>::remove", "index out of range");
  erase(begin() + i, begin() + i + 1); }

remove() [2/2]

template<typename T >

void QVector< T >::remove ( int  i, int  count  )

inline

Removes count elements from the middle of the vector, starting at index position i.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

See also

insert(), replace(), fill()

Definition at line 370 of file qvector.h.

{ Q_ASSERT_X(i >= 0 && n >= 0 && i + n <= d->size, "QVector<T>::remove", "index out of range");
  erase(begin() + i, begin() + i + n); }

replace()

template<typename T>

void QVector< T >::replace ( int  i, const T &  value  )

inline

Replaces the item at index position i with value.

i must be a valid index position in the vector (i.e., 0 <= i < size()).

See also

operator[](), remove()

Definition at line 382 of file qvector.h.

Referenced by QDesktopWidgetPrivate::init(), q_reduceConfigAttributes(), and QGLColormap::setEntry().

{
    Q_ASSERT_X(i >= 0 && i < d->size, "QVector<T>::replace", "index out of range");
    const T copy(t);
    data()[i] = copy;
}

reserve()

template<typename T >

void QVector< T >::reserve

(

int

size

)

Attempts to allocate memory for at least size elements.

If you know in advance how large the vector will be, you can call this function, and if you call resize() often you are likely to get better performance. If size is an underestimate, the worst that will happen is that the QVector will be a bit slower.

The sole purpose of this function is to provide a means of fine tuning QVector's memory usage. In general, you will rarely ever need to call this function. If you want to change the size of the vector, call resize().

See also

squeeze(), capacity()

Definition at line 339 of file qvector.h.

Referenced by QWindowsMime::allFormatsForMime(), QAbstractItemModel::changePersistentIndexList(), QTableModel::columnItems(), QSortFilterProxyModelPrivate::create_mapping(), QPathClipper::doClip(), QCommonStyle::drawPrimitive(), QWindowsMobileStyle::drawPrimitive(), QPainterPath::ensureData_helper(), QTableModel::ensureSorted(), flushRow(), QVector< QPoint >::fromStdVector(), QXmlStreamReaderPrivate::init(), QTreeWidgetItem::insertChild(), QTextDocumentLayoutPrivate::layoutFlow(), QTextDocumentLayoutPrivate::layoutTable(), QVector< QPoint >::mid(), QStandardItemModel::mimeData(), QPatternist::NamePool::NamePool(), operator>>(), QSvgHandler::parseCSStoXMLAttrs(), parseNumbersList(), QListModeViewBase::perItemScrollingPageSteps(), QListModeViewBase::perItemScrollToValue(), QDirIteratorPrivate::QDirIteratorPrivate(), qDrawShadePanel(), QTest::qExec(), QGraphicsViewPrivate::QGraphicsViewPrivate(), QTreeWidgetItem::QTreeWidgetItem(), QWindowsFileSystemWatcherEngineThread::QWindowsFileSystemWatcherEngineThread(), QXmlSerializerPrivate::QXmlSerializerPrivate(), QTextHtmlImporter::scanTable(), QTableModel::sort(), QStandardItemPrivate::sortChildren(), splitPolygon(), QCss::StyleSelector::styleRulesForNode(), QPolygonF::toPolygon(), QPainterPath::toSubpathPolygons(), QDeclarativePropertyCache::update(), and QConfFileSettingsPrivate::writeIniFile().

{ if (asize > d->alloc) realloc(d->size, asize); if (d->ref == 1) d->capacity = 1; }

resize()

template<typename T >

void QVector< T >::resize

(

int

size

)

Sets the size of the vector to size.

If size is greater than the current size, elements are added to the end; the new elements are initialized with a default-constructed value. If size is less than the current size, elements are removed from the end.

See also

size()

Definition at line 342 of file qvector.h.

Referenced by QObjectPrivate::addConnection(), addPoint(), QRegExpCharClass::addRange(), QPdfEnginePrivate::addXrefEntry(), QGraphicsViewPrivate::allocStyleOptionsArray(), QProxyFontEngine::alphaMapForGlyph(), QDeclarativePropertyCache::append(), QRegionPrivate::append(), QSqlCachedResult::cacheNext(), QStyleHelper::calcLines(), QTreeViewPrivate::calcLogicalIndices(), QScript::callQtMethod(), QRegExpCharClass::clear(), QTextDocumentPrivate::clearUndoRedoStacks(), QX11PaintEnginePrivate::clipPolygon_dev(), convert_indexed8_to_ARGB_PM_inplace(), convert_indexed8_to_RGB_inplace(), convert_Indexed8_to_X32(), convert_Mono_to_Indexed8(), convert_RGB_to_Indexed8(), convertWithPalette(), QImageData::create(), QBspTree::create(), QSortFilterProxyModelPrivate::create_mapping(), QShortcutMap::createNewSequences(), QPathClipper::doClip(), QWindowsStyle::drawComplexControl(), QMotifStyle::drawComplexControl(), QMotifStyle::drawPrimitive(), QTextHtmlExporter::emitTable(), enumCallback(), QPatternist::ReturnOrderBy::evaluateSingleton(), QDB2Result::exec(), QODBCResult::exec(), QSQLite2ResultPrivate::fetchNext(), QSQLiteResultPrivate::fetchNext(), find_trans_colors(), QWindowsAccessible::get_accSelection(), QDockAreaLayout::getGrid(), QXlibWindow::getNetWmState(), getNetWmState(), QFontSubset::getReverseMap(), QPatternist::GenericDynamicContext::globalItemCacheCell(), QPatternist::GenericDynamicContext::globalItemSequenceCacheCells(), QTextEngine::indexAdditionalFormats(), QDesktopWidgetPrivate::init(), QSqlCachedResultPrivate::init(), init_gray(), init_indexed(), QGraphicsSceneBspTree::initialize(), QHeaderViewPrivate::initializeIndexMapping(), QTableModel::insertColumns(), QTreeModel::insertColumns(), QTableModel::insertRows(), QTextDocumentLayoutPrivate::layoutFlow(), QTextDocumentLayoutPrivate::layoutTable(), QFontEngineMultiFT::loadEngine(), mergeInto(), miRegionOp(), QSqlCachedResultPrivate::nextIndex(), QDB2Result::nextResult(), QODBCResult::nextResult(), operator>>(), QXmlStreamReaderPrivate::parse(), PolygonRegion(), QTriangulator< T >::polyline(), QStack< State >::pop(), QRegionPrivate::prepend(), PtsToRegion(), Q_GLOBAL_STATIC_WITH_INITIALIZER(), qDrawPlainRect(), QImage::QImage(), qstring_to_xtp(), query_colormap(), qWinCmdLine(), QXmlSerializerPrivate::QXmlSerializerPrivate(), QInternal::registerCallback(), QStateMachinePrivate::registerSignalTransition(), QDB2Result::reset(), QODBCResult::reset(), QXmlStreamReaderPrivate::resolveDtd(), QXmlStreamReaderPrivate::resolvePublicNamespaces(), QXmlStreamReaderPrivate::resolveTag(), QTextHtmlImporter::scanTable(), QAccessibleListView::selection(), QAccessibleIconView::selection(), QAccessibleListBox::selection(), QRegExpEngine::Box::set(), QImage::setColorCount(), QTreeModel::setColumnCount(), QTreeWidgetItem::setData(), QWSCalibratedMouseHandler::setFilterSize(), QRegion::setRects(), QGridLayoutEngine::setRowAlignment(), QListModeViewBase::setRowCount(), QGridLayoutEngine::setRowSizeHint(), QGridLayoutEngine::setRowSpacing(), QGridLayoutEngine::setRowStretchFactor(), QRegExpEngine::setup(), QFormLayoutPrivate::setupHfwLayoutData(), QFormLayoutPrivate::setupVerticalLayoutData(), QObject::setUserData(), QGridLayoutEngine::sizeHint(), QSortFilterProxyModelPrivate::source_items_inserted(), QRegExpEngine::startAtom(), QPainterPath::toFillPolygons(), QFontSubset::toTruetype(), QString::toUcs4(), QStringRef::toUcs4(), QTriangulator< T >::triangulate(), QMenuPrivate::updateActionRects(), QDockAreaLayoutInfo::updateSeparatorWidgets(), QDockAreaLayout::updateSeparatorWidgets(), QRegionPrivate::vector(), QRegionPrivate::vectorize(), and QMYSQLResult::virtual_hook().

{ realloc(asize, (asize > d->alloc || (!d->capacity && asize < d->size && asize < (d->alloc >> 1))) ?
          QVectorData::grow(sizeOfTypedData(), asize, sizeof(T), QTypeInfo<T>::isStatic)
          : d->alloc); }

setSharable()

template<typename T>

void QVector< T >::setSharable ( bool  sharable )

inline

Warning

This function is not part of the public interface.

Definition at line 149 of file qvector.h.

{ if (!sharable) detach(); d->sharable = sharable; }

size()

template<typename T>

int QVector< T >::size ( ) const

inline

Returns the number of items in the vector.

See also

isEmpty(), resize()

Definition at line 137 of file qvector.h.

Referenced by QRegExpEngine::Box::addAnchorsToEngine(), QRegExpEngine::addCatTransitions(), QXmlStreamReader::addExtraNamespaceDeclarations(), QPdfEnginePrivate::addImage(), QRegExpEngine::addLookahead(), QRegExpEngine::addPlusTransitions(), addPoint(), QPainterPath::addPolygon(), QRegExpCharClass::addRange(), QPainterPath::addRegion(), QPainterPath::addText(), QPdfEnginePrivate::addXrefEntry(), QRawFont::advancesForGlyphIndexes(), QGraphicsViewPrivate::allocStyleOptionsArray(), QRegExpEngine::anchorAlternation(), QRegionPrivate::append(), QTextDocumentPrivate::appendUndoItem(), QSvgStrokeStyle::apply(), QTextEngine::attributes(), QTextEngine::beginningOfLine(), ShaderEffectItem::bindGeometry(), QAhiScreen::blit(), QTransformedScreen::blit(), blit_template(), QTextEngine::boundingBox(), QSortFilterProxyModelPrivate::build_source_to_proxy_mapping(), QScript::callQtMethod(), QRegExpEngine::Box::cat(), QRegExpEngine::Box::catAnchor(), QTextTableData::cellPosition(), checkGrayscale(), 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{ return d->size; }

sizeOfTypedData()

template<typename T>

int QVector< T >::sizeOfTypedData ( )

inlineprivate

Definition at line 320 of file qvector.h.

                          {
        // this is more or less the same as sizeof(Data), except that it doesn't
        // count the padding at the end
        return reinterpret_cast<const char *>(&(reinterpret_cast<const Data *>(this))->array[1]) - reinterpret_cast<const char *>(this);
    }

squeeze()

template<typename T>

void QVector< T >::squeeze ( )

inline

Releases any memory not required to store the items.

The sole purpose of this function is to provide a means of fine tuning QVector's memory usage. In general, you will rarely ever need to call this function.

See also

reserve(), capacity()

Definition at line 145 of file qvector.h.

Referenced by QGraphicsScenePrivate::_q_polishItems().

{ realloc(d->size, d->size); d->capacity = 0; }

startsWith()

template<typename T>

bool QVector< T >::startsWith ( const T &  value ) const

inline

Returns true if this vector is not empty and its first item is equal to value; otherwise returns false.

Since

4.5

See also

isEmpty(), first()

Definition at line 264 of file qvector.h.

{ return !isEmpty() && first() == t; }

swap()

template<typename T>

void QVector< T >::swap ( QVector< T > &  other )

inline

Swaps vector other with this vector.

Since

4.8

This operation is very fast and never fails.

Definition at line 130 of file qvector.h.

Referenced by QStack< State >::swap(), QPolygon::swap(), and QPolygonF::swap().

{ qSwap(d, other.d); }

toList()

template<typename T >

Q_OUTOFLINE_TEMPLATE QList< T > QVector< T >::toList

(

)

const

Returns a QList object with the data contained in this QVector.

Example:

QVector<QString> vect;
vect << "red" << "green" << "blue" << "black";

QList<QString> list = vect.toList();
// list: ["red", "green", "blue", "black"]

See also

fromList(), QList::fromVector()

Definition at line 770 of file qvector.h.

Referenced by QList< QPostEvent >::fromVector(), operator<<(), and QPatternist::ListIterator< QXmlNodeModelIndexIteratorPointer, QVector< QXmlNodeModelIndexIteratorPointer > >::toList().

{
    QList<T> result;
    result.reserve(size());
    for (int i = 0; i < size(); ++i)
        result.append(at(i));
    return result;
}

toStdVector()

template<typename T>

std::vector< T > QVector< T >::toStdVector ( ) const

inline

Returns a std::vector object with the data contained in this QVector.

Example:

QVector<double> vector;
vector << 1.2 << 0.5 << 3.14;

std::vector<double> stdvector = vector.toStdVector();

See also

fromStdVector(), QList::toStdList()

Definition at line 310 of file qvector.h.

    { std::vector<T> tmp; tmp.reserve(size()); qCopy(constBegin(), constEnd(), std::back_inserter(tmp)); return tmp; }

value() [1/2]

template<typename T >

Q_OUTOFLINE_TEMPLATE T QVector< T >::value

(

int

i

)

const

Returns the value at index position i in the vector.

If the index i is out of bounds, the function returns a default-constructed value. If you are certain that i is within bounds, you can use at() instead, which is slightly faster.

See also

at(), operator[]()

Definition at line 559 of file qvector.h.

Referenced by QGridLayoutRowData::calculateGeometries(), QRegExpEngine::dump(), QGridLayoutEngine::fillRowData(), QXmlStreamAttributes::hasAttribute(), QTableModel::horizontalHeaderItem(), QTableModel::item(), QPatternist::XsdStateMachine< XsdSchemaToken::NodeName >::outputGraph(), QXmlStreamAttributes::QXmlStreamAttributes(), QListWidgetItem::setData(), QTableWidgetItem::setData(), QTreeWidgetItem::setData(), QTableModel::takeItem(), and QTableModel::verticalHeaderItem().

{
    if (i < 0 || i >= d->size) {
        return T();
    }
    return p->array[i];
}

value() [2/2]

template<typename T>

Q_OUTOFLINE_TEMPLATE T QVector< T >::value	(	int	i,
		const T &	defaultValue
	)		const

If the index i is out of bounds, the function returns defaultValue.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 567 of file qvector.h.

{
    return ((i < 0 || i >= d->size) ? defaultValue : p->array[i]);
}

Friends and Related Functions

operator<<()

template<typename T>

QDataStream & operator<< ( QDataStream &  out, const QVector< T > &  vector  )

related

Writes the vector vector to stream out.

This function requires the value type to implement operator<<().

See also

Format of the QDataStream operators

Definition at line 312 of file qdatastream.h.

{
    s << quint32(v.size());
    for (typename QVector<T>::const_iterator it = v.begin(); it != v.end(); ++it)
        s << *it;
    return s;
}

operator>>()

template<typename T>

QDataStream & operator>> ( QDataStream &  in, QVector< T > &  vector  )

related

Reads a vector from stream in into vector.

This function requires the value type to implement operator>>().

See also

Format of the QDataStream operators

Definition at line 297 of file qdatastream.h.

{
    v.clear();
    quint32 c;
    s >> c;
    v.resize(c);
    for(quint32 i = 0; i < c; ++i) {
        T t;
        s >> t;
        v[i] = t;
    }
    return s;
}

QRegion

template<typename T>

friend class QRegion

friend

Definition at line 314 of file qvector.h.

Properties

@94

union { ... }

d

template<typename T>

QVectorData* QVector< T >::d

Definition at line 109 of file qvector.h.

Referenced by QVector< QPoint >::isSharedWith(), QVector< QPoint >::operator+=(), QVector< QPoint >::operator=(), QVector< QPoint >::operator==(), QRegion::rects(), and QVector< QPoint >::swap().

p

template<typename T>

Data* QVector< T >::p

Definition at line 113 of file qvector.h.

Referenced by QVector< QPoint >::operator+=(), and QVector< QPoint >::operator==().

---

The documentation for this class was generated from the following files:

• /src/corelib/io/qdatastream.h
• /src/corelib/tools/qvector.h
• /src/corelib/tools/qvector.cpp