| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** Contact: Qt Software Information ([email protected])
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| 5 | **
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| 6 | ** This file is part of the QtCore module of the Qt Toolkit.
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| 8 | ** $QT_BEGIN_LICENSE:LGPL$
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| 9 | ** Commercial Usage
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| 15 | ** GNU Lesser General Public License Usage
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | /*!
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| 43 | \class QStack
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| 44 | \brief The QStack class is a template class that provides a stack.
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| 45 |
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| 46 | \ingroup tools
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| 47 | \ingroup shared
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| 48 | \mainclass
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| 49 | \reentrant
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| 50 |
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| 51 | QStack\<T\> is one of Qt's generic \l{container classes}. It implements
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| 52 | a stack data structure for items of a same type.
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| 53 |
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| 54 | A stack is a last in, first out (LIFO) structure. Items are added
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| 55 | to the top of the stack using push() and retrieved from the top
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| 56 | using pop(). The top() function provides access to the topmost
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| 57 | item without removing it.
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| 58 |
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| 59 | Example:
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| 60 |
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| 61 | \snippet doc/src/snippets/qstack/main.cpp 0
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| 62 |
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| 63 | The example will output 3, 2, 1 in that order.
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| 64 |
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| 65 | QStack inherits from QVector. All of QVector's functionality also
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| 66 | applies to QStack. For example, you can use isEmpty() to test
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| 67 | whether the stack is empty, and you can traverse a QStack using
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| 68 | QVector's iterator classes (for example, QVectorIterator). But in
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| 69 | addition, QStack provides three convenience functions that make
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| 70 | it easy to implement LIFO semantics: push(), pop(), and top().
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| 71 |
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