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<h1 class="title">Q3IntCacheIterator Class Reference</h1>
<!-- $$$Q3IntCacheIterator-brief -->
<p>The Q3IntCacheIterator class provides an iterator for <a href="q3intcache.html">Q3IntCache</a> collections. <a href="#details">More...</a></p>
<!-- @@@Q3IntCacheIterator -->
<pre class="cpp"> <span class="preprocessor">#include &lt;Q3IntCacheIterator&gt;</span></pre><p><b>This class is part of the Qt 3 support library.</b> It is provided to keep old source code working. We strongly advise against using it in new code. See <a href="porting4.html">Porting to Qt 4</a> for more information.</p>
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<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#Q3IntCacheIterator">Q3IntCacheIterator</a></b> ( const Q3IntCache&lt;type&gt; &amp; <i>cache</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#Q3IntCacheIterator-2">Q3IntCacheIterator</a></b> ( const Q3IntCacheIterator&lt;type&gt; &amp; <i>ci</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#atFirst">atFirst</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#atLast">atLast</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> uint </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#count">count</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#current">current</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> long </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#currentKey">currentKey</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#isEmpty">isEmpty</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#toFirst">toFirst</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#toLast">toLast</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#operator-type--2a">operator type *</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#operator-28-29">operator()</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#operator-2b-2b">operator++</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#operator-2b-eq">operator+=</a></b> ( uint <i>jump</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#operator--">operator--</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> type * </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#operator--eq">operator-=</a></b> ( uint <i>jump</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Q3IntCacheIterator&lt;type&gt; &amp; </td><td class="memItemRight bottomAlign"><b><a href="q3intcacheiterator.html#operator-eq">operator=</a></b> ( const Q3IntCacheIterator&lt;type&gt; &amp; <i>ci</i> )</td></tr>
</table>
<a name="details"></a>
<!-- $$$Q3IntCacheIterator-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The Q3IntCacheIterator class provides an iterator for <a href="q3intcache.html">Q3IntCache</a> collections.</p>
<p>Note that the traversal order is arbitrary; you are not guaranteed any particular order. If new objects are inserted into the cache while the iterator is active, the iterator may or may not see them.</p>
<p>Multiple iterators are completely independent, even when they operate on the same <a href="q3intcache.html">Q3IntCache</a>. <a href="q3intcache.html">Q3IntCache</a> updates all iterators that refer an item when that item is removed.</p>
<p>Q3IntCacheIterator provides an operator++(), and an operator+=() to traverse the cache; <a href="q3intcacheiterator.html#current">current</a>() and <a href="q3intcacheiterator.html#currentKey">currentKey</a>() to access the current cache item and its key; <a href="q3intcacheiterator.html#atFirst">atFirst</a>() <a href="q3intcacheiterator.html#atLast">atLast</a>(), which return TRUE if the iterator points to the first/last item in the cache; <a href="q3intcacheiterator.html#isEmpty">isEmpty</a>(), which returns TRUE if the cache is empty; and <a href="q3intcacheiterator.html#count">count</a>(), which returns the number of items in the cache.</p>
<p>Note that <a href="q3intcacheiterator.html#atFirst">atFirst</a>() and <a href="q3intcacheiterator.html#atLast">atLast</a>() refer to the iterator's arbitrary ordering, not to the cache's internal least recently used list.</p>
</div>
<p><b>See also </b><a href="q3intcache.html">Q3IntCache</a>.</p>
<!-- @@@Q3IntCacheIterator -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$Q3IntCacheIterator[overload1]$$$Q3IntCacheIteratorconstQ3IntCache<type>& -->
<h3 class="fn"><a name="Q3IntCacheIterator"></a>Q3IntCacheIterator::<span class="name">Q3IntCacheIterator</span> ( const <span class="type"><a href="q3intcache.html">Q3IntCache</a></span>&lt;<span class="type">type</span>&gt; &amp; <i>cache</i> )</h3>
<p>Constructs an iterator for <i>cache</i>. The current iterator item is set to point to the first item in the <i>cache</i> (or rather, the first item is defined to be the item at which this constructor sets the iterator to point).</p>
<!-- @@@Q3IntCacheIterator -->
<!-- $$$Q3IntCacheIterator$$$Q3IntCacheIteratorconstQ3IntCacheIterator<type>& -->
<h3 class="fn"><a name="Q3IntCacheIterator-2"></a>Q3IntCacheIterator::<span class="name">Q3IntCacheIterator</span> ( const <span class="type">Q3IntCacheIterator</span>&lt;<span class="type">type</span>&gt; &amp; <i>ci</i> )</h3>
<p>Constructs an iterator for the same cache as <i>ci</i>. The new iterator starts at the same item as ci.<a href="q3intcacheiterator.html#current">current</a>(), but moves independently from there on.</p>
<!-- @@@Q3IntCacheIterator -->
<!-- $$$atFirst[overload1]$$$atFirst -->
<h3 class="fn"><a name="atFirst"></a><span class="type">bool</span> Q3IntCacheIterator::<span class="name">atFirst</span> () const</h3>
<p>Returns TRUE if the iterator points to the first item in the cache; otherwise returns FALSE. Note that this refers to the iterator's arbitrary ordering, not to the cache's internal least recently used list.</p>
<p><b>See also </b><a href="q3intcacheiterator.html#toFirst">toFirst</a>() and <a href="q3intcacheiterator.html#atLast">atLast</a>().</p>
<!-- @@@atFirst -->
<!-- $$$atLast[overload1]$$$atLast -->
<h3 class="fn"><a name="atLast"></a><span class="type">bool</span> Q3IntCacheIterator::<span class="name">atLast</span> () const</h3>
<p>Returns TRUE if the iterator points to the last item in the cache; otherwise returns FALSE. Note that this refers to the iterator's arbitrary ordering, not to the cache's internal least recently used list.</p>
<p><b>See also </b><a href="q3intcacheiterator.html#toLast">toLast</a>() and <a href="q3intcacheiterator.html#atFirst">atFirst</a>().</p>
<!-- @@@atLast -->
<!-- $$$count[overload1]$$$count -->
<h3 class="fn"><a name="count"></a><span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> Q3IntCacheIterator::<span class="name">count</span> () const</h3>
<p>Returns the number of items in the cache on which this iterator operates.</p>
<p><b>See also </b><a href="q3intcacheiterator.html#isEmpty">isEmpty</a>().</p>
<!-- @@@count -->
<!-- $$$current[overload1]$$$current -->
<h3 class="fn"><a name="current"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">current</span> () const</h3>
<p>Returns a pointer to the current iterator item.</p>
<!-- @@@current -->
<!-- $$$currentKey[overload1]$$$currentKey -->
<h3 class="fn"><a name="currentKey"></a><span class="type">long</span> Q3IntCacheIterator::<span class="name">currentKey</span> () const</h3>
<p>Returns the key for the current iterator item.</p>
<!-- @@@currentKey -->
<!-- $$$isEmpty[overload1]$$$isEmpty -->
<h3 class="fn"><a name="isEmpty"></a><span class="type">bool</span> Q3IntCacheIterator::<span class="name">isEmpty</span> () const</h3>
<p>Returns TRUE if the cache is empty; otherwise returns FALSE.</p>
<p><b>See also </b><a href="q3intcacheiterator.html#count">count</a>().</p>
<!-- @@@isEmpty -->
<!-- $$$toFirst[overload1]$$$toFirst -->
<h3 class="fn"><a name="toFirst"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">toFirst</span> ()</h3>
<p>Sets the iterator to point to the first item in the cache and returns a pointer to the item.</p>
<p>Sets the iterator to 0, and returns 0, if the cache is empty.</p>
<p><b>See also </b><a href="q3intcacheiterator.html#toLast">toLast</a>() and <a href="q3intcacheiterator.html#isEmpty">isEmpty</a>().</p>
<!-- @@@toFirst -->
<!-- $$$toLast[overload1]$$$toLast -->
<h3 class="fn"><a name="toLast"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">toLast</span> ()</h3>
<p>Sets the iterator to point to the last item in the cache and returns a pointer to the item.</p>
<p>Sets the iterator to 0, and returns 0, if the cache is empty.</p>
<p><b>See also </b><a href="q3intcacheiterator.html#toFirst">toFirst</a>() and <a href="q3intcacheiterator.html#isEmpty">isEmpty</a>().</p>
<!-- @@@toLast -->
<!-- $$$operator type *[overload1]$$$operator type * -->
<h3 class="fn"><a name="operator-type--2a"></a>Q3IntCacheIterator::<span class="name">operator type *</span> () const</h3>
<p>Cast operator. Returns a pointer to the current iterator item. Same as <a href="q3intcacheiterator.html#current">current</a>().</p>
<!-- @@@operator type * -->
<!-- $$$operator()[overload1]$$$operator() -->
<h3 class="fn"><a name="operator-28-29"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">operator()</span> ()</h3>
<p>Makes the succeeding item current and returns the original current item.</p>
<p>If the current iterator item was the last item in the cache or if it was 0, 0 is returned.</p>
<!-- @@@operator() -->
<!-- $$$operator++[overload1]$$$operator++ -->
<h3 class="fn"><a name="operator-2b-2b"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">operator++</span> ()</h3>
<p>Prefix ++ makes the iterator point to the item just after <a href="q3intcacheiterator.html#current">current</a>(), and makes it the new current item for the iterator. If <a href="q3intcacheiterator.html#current">current</a>() was the last item, operator--() returns 0.</p>
<!-- @@@operator++ -->
<!-- $$$operator+=[overload1]$$$operator+=uint -->
<h3 class="fn"><a name="operator-2b-eq"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">operator+=</span> ( <span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> <i>jump</i> )</h3>
<p>Returns the item <i>jump</i> positions after the current item, or 0 if it is beyond the last item. Makes this the current item.</p>
<!-- @@@operator+= -->
<!-- $$$operator--[overload1]$$$operator-- -->
<h3 class="fn"><a name="operator--"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">operator--</span> ()</h3>
<p>Prefix -- makes the iterator point to the item just before <a href="q3intcacheiterator.html#current">current</a>(), and makes it the new current item for the iterator. If <a href="q3intcacheiterator.html#current">current</a>() was the first item, operator--() returns 0.</p>
<!-- @@@operator-- -->
<!-- $$$operator-=[overload1]$$$operator-=uint -->
<h3 class="fn"><a name="operator--eq"></a><span class="type">type</span> * Q3IntCacheIterator::<span class="name">operator-=</span> ( <span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> <i>jump</i> )</h3>
<p>Returns the item <i>jump</i> positions before the current item, or 0 if it is beyond the first item. Makes this the current item.</p>
<!-- @@@operator-= -->
<!-- $$$operator=[overload1]$$$operator=constQ3IntCacheIterator<type>& -->
<h3 class="fn"><a name="operator-eq"></a><span class="type">Q3IntCacheIterator</span>&lt;<span class="type">type</span>&gt; &amp; Q3IntCacheIterator::<span class="name">operator=</span> ( const <span class="type">Q3IntCacheIterator</span>&lt;<span class="type">type</span>&gt; &amp; <i>ci</i> )</h3>
<p>Makes this an iterator for the same cache as <i>ci</i>. The new iterator starts at the same item as ci.<a href="q3intcacheiterator.html#current">current</a>(), but moves independently thereafter.</p>
<!-- @@@operator= -->
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