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174 lines
8.6 KiB
174 lines
8.6 KiB
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<title>QMapConstIterator Class</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QMapConstIterator Class Reference</h1>
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<p>The QMapConstIterator class provides an iterator for QMap.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qmap-h.html">qmap.h</a>></tt>
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<p><a href="qmapconstiterator-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>typedef std::bidirectional_iterator_tag <a href="#iterator_category"><b>iterator_category</b></a></li>
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<li class=fn>typedef T <a href="#value_type"><b>value_type</b></a></li>
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<li class=fn>typedef const T * <a href="#pointer"><b>pointer</b></a></li>
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<li class=fn>typedef const T & <a href="#reference"><b>reference</b></a></li>
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<li class=fn><a href="#QMapConstIterator"><b>QMapConstIterator</b></a> ()</li>
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<li class=fn><a href="#QMapConstIterator-2"><b>QMapConstIterator</b></a> ( QMapNode<K, T> * p )</li>
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<li class=fn><a href="#QMapConstIterator-3"><b>QMapConstIterator</b></a> ( const QMapConstIterator<K, T> & it )</li>
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<li class=fn><a href="#QMapConstIterator-4"><b>QMapConstIterator</b></a> ( const QMapIterator<K, T> & it )</li>
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<li class=fn>bool <a href="#operator-eq-eq"><b>operator==</b></a> ( const QMapConstIterator<K, T> & it ) const</li>
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<li class=fn>bool <a href="#operator!-eq"><b>operator!=</b></a> ( const QMapConstIterator<K, T> & it ) const</li>
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<li class=fn>const T & <a href="#operator*"><b>operator*</b></a> () const</li>
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<li class=fn>const K & <a href="#key"><b>key</b></a> () const</li>
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<li class=fn>const T & <a href="#data"><b>data</b></a> () const</li>
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<li class=fn>QMapConstIterator<K, T> & <a href="#operator++"><b>operator++</b></a> ()</li>
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<li class=fn>QMapConstIterator<K, T> <a href="#operator++-2"><b>operator++</b></a> ( int )</li>
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<li class=fn>QMapConstIterator<K, T> & <a href="#operator--"><b>operator--</b></a> ()</li>
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<li class=fn>QMapConstIterator<K, T> <a href="#operator---2"><b>operator--</b></a> ( int )</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The QMapConstIterator class provides an iterator for <a href="qmap.html">QMap</a>.
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<p>
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<p> In contrast to <a href="qmapiterator.html">QMapIterator</a>, this class is used to iterate over a
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const map. It does not allow you to modify the values of the map
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because this would break the const semantics.
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<p> For more information on QMap iterators, see <a href="qmapiterator.html">QMapIterator</a> and
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the <a href="qmap.html#qmap-eg">QMap example</a>.
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<p> <p>See also <a href="qmap.html">QMap</a>, <a href="qmapiterator.html">QMapIterator</a>, <a href="qtl.html">Qt Template Library Classes</a>, and <a href="tools.html">Non-GUI Classes</a>.
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<hr><h2>Member Type Documentation</h2>
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<h3 class=fn><a name="iterator_category"></a>QMapConstIterator::iterator_category</h3>
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The type of iterator category, <tt>std::bidirectional_iterator_tag</tt>.
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<h3 class=fn><a name="pointer"></a>QMapConstIterator::pointer</h3>
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Const pointer to value_type.
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<h3 class=fn><a name="reference"></a>QMapConstIterator::reference</h3>
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Const reference to value_type.
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<h3 class=fn><a name="value_type"></a>QMapConstIterator::value_type</h3>
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The type of const value.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="QMapConstIterator"></a>QMapConstIterator::QMapConstIterator ()
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</h3>
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<p> Constructs an uninitialized iterator.
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<h3 class=fn><a name="QMapConstIterator-2"></a>QMapConstIterator::QMapConstIterator ( QMapNode<K, T> * p )
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</h3>
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<p> Constructs an iterator starting at node <em>p</em>.
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<h3 class=fn><a name="QMapConstIterator-3"></a>QMapConstIterator::QMapConstIterator ( const <a href="qmapconstiterator.html">QMapConstIterator</a><K, T> & it )
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</h3>
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<p> Constructs a copy of the iterator, <em>it</em>.
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<h3 class=fn><a name="QMapConstIterator-4"></a>QMapConstIterator::QMapConstIterator ( const <a href="qmapiterator.html">QMapIterator</a><K, T> & it )
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</h3>
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<p> Constructs a copy of the iterator, <em>it</em>.
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<h3 class=fn>const T & <a name="data"></a>QMapConstIterator::data () const
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</h3>
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<p> Returns a const reference to the current item's data.
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<h3 class=fn>const K & <a name="key"></a>QMapConstIterator::key () const
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</h3>
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<p> Returns a const reference to the current item's key.
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<h3 class=fn>bool <a name="operator!-eq"></a>QMapConstIterator::operator!= ( const <a href="qmapconstiterator.html">QMapConstIterator</a><K, T> & it ) const
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</h3>
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<p> Compares the iterator to the <em>it</em> iterator and returns FALSE if
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they point to the same item; otherwise returns TRUE.
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<h3 class=fn>const T & <a name="operator*"></a>QMapConstIterator::operator* () const
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</h3>
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<p> Dereference operator. Returns a const reference to the current
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item's data. The same as <a href="#data">data</a>().
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<h3 class=fn><a href="qmapconstiterator.html">QMapConstIterator</a><K, T> & <a name="operator++"></a>QMapConstIterator::operator++ ()
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</h3>
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<p> Prefix ++ makes the succeeding item current and returns an
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iterator pointing to the new current item. The iterator cannot
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check whether it reached the end of the map. Incrementing the
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iterator returned by end() causes undefined results.
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<h3 class=fn><a href="qmapconstiterator.html">QMapConstIterator</a><K, T> <a name="operator++-2"></a>QMapConstIterator::operator++ ( int )
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</h3>
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<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
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<p> Postfix ++ makes the succeeding item current and returns an
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iterator pointing to the new current item. The iterator cannot
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check whether it reached the end of the map. Incrementing the
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iterator returned by end() causes undefined results.
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<h3 class=fn><a href="qmapconstiterator.html">QMapConstIterator</a><K, T> & <a name="operator--"></a>QMapConstIterator::operator-- ()
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</h3>
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<p> Prefix -- makes the previous item current and returns an iterator
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pointing to the new current item. The iterator cannot check
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whether it reached the beginning of the map. Decrementing the
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iterator returned by begin() causes undefined results.
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<h3 class=fn><a href="qmapconstiterator.html">QMapConstIterator</a><K, T> <a name="operator---2"></a>QMapConstIterator::operator-- ( int )
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</h3>
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<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
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<p> Postfix -- makes the previous item current and returns an iterator
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pointing to the new current item. The iterator cannot check
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whether it reached the beginning of the map. Decrementing the
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iterator returned by begin() causes undefined results.
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<h3 class=fn>bool <a name="operator-eq-eq"></a>QMapConstIterator::operator== ( const <a href="qmapconstiterator.html">QMapConstIterator</a><K, T> & it ) const
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</h3>
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<p> Compares the iterator to the <em>it</em> iterator and returns TRUE if
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they point to the same item; otherwise returns FALSE.
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This file is part of the <a href="index.html">Qt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<td align=right><div align=right>Qt 3.3.8</div>
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