You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
tqt3/doc/html/tqintcacheiterator.html

212 lines
9.6 KiB

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/tqintcache.doc:281 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>TQIntCacheIterator Class</title>
<style type="text/css"><!--
fn { margin-left: 1cm; text-indent: -1cm; }
a:link { color: #004faf; text-decoration: none }
a:visited { color: #672967; text-decoration: none }
body { background: #ffffff; color: black; }
--></style>
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr bgcolor="#E5E5E5">
<td valign=center>
<a href="index.html">
<font color="#004faf">Home</font></a>
| <a href="classes.html">
<font color="#004faf">All&nbsp;Classes</font></a>
| <a href="mainclasses.html">
<font color="#004faf">Main&nbsp;Classes</font></a>
| <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
| <a href="groups.html">
<font color="#004faf">Grouped&nbsp;Classes</font></a>
| <a href="functions.html">
<font color="#004faf">Functions</font></a>
</td>
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQIntCacheIterator Class Reference</h1>
<p>The TQIntCacheIterator class provides an iterator for TQIntCache collections.
<a href="#details">More...</a>
<p><tt>#include &lt;<a href="tqintcache-h.html">tqintcache.h</a>&gt;</tt>
<p><a href="tqintcacheiterator-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#TQIntCacheIterator"><b>TQIntCacheIterator</b></a> ( const&nbsp;TQIntCache&lt;type&gt;&nbsp;&amp;&nbsp;cache )</li>
<li class=fn><a href="#TQIntCacheIterator-2"><b>TQIntCacheIterator</b></a> ( const&nbsp;TQIntCacheIterator&lt;type&gt;&nbsp;&amp;&nbsp;ci )</li>
<li class=fn>TQIntCacheIterator&lt;type&gt; &amp; <a href="#operator-eq"><b>operator=</b></a> ( const&nbsp;TQIntCacheIterator&lt;type&gt;&nbsp;&amp;&nbsp;ci )</li>
<li class=fn>uint <a href="#count"><b>count</b></a> () const</li>
<li class=fn>bool <a href="#isEmpty"><b>isEmpty</b></a> () const</li>
<li class=fn>bool <a href="#atFirst"><b>atFirst</b></a> () const</li>
<li class=fn>bool <a href="#atLast"><b>atLast</b></a> () const</li>
<li class=fn>type * <a href="#toFirst"><b>toFirst</b></a> ()</li>
<li class=fn>type * <a href="#toLast"><b>toLast</b></a> ()</li>
<li class=fn><a href="#operator-type-*"><b>operator type *</b></a> () const</li>
<li class=fn>type * <a href="#current"><b>current</b></a> () const</li>
<li class=fn>long <a href="#currentKey"><b>currentKey</b></a> () const</li>
<li class=fn>type * <a href="#operator()"><b>operator()</b></a> ()</li>
<li class=fn>type * <a href="#operator++"><b>operator++</b></a> ()</li>
<li class=fn>type * <a href="#operator+-eq"><b>operator+=</b></a> ( uint&nbsp;jump )</li>
<li class=fn>type * <a href="#operator--"><b>operator--</b></a> ()</li>
<li class=fn>type * <a href="#operator--eq"><b>operator-=</b></a> ( uint&nbsp;jump )</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The TQIntCacheIterator class provides an iterator for <a href="tqintcache.html">TQIntCache</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> Multiple iterators are completely independent, even when they
operate on the same TQIntCache. TQIntCache updates all iterators
that refer an item when that item is removed.
<p> TQIntCacheIterator provides an <a href="#operator++">operator++</a>(), and an <a href="#operator+-eq">operator+=</a>() to
traverse the cache; <a href="#current">current</a>() and <a href="#currentKey">currentKey</a>() to access the
current cache item and its key; <a href="#atFirst">atFirst</a>() <a href="#atLast">atLast</a>(), which return
TRUE if the iterator points to the first/last item in the cache;
<a href="#isEmpty">isEmpty</a>(), which returns TRUE if the cache is empty; and <a href="#count">count</a>(),
which returns the number of items in the cache.
<p> Note that atFirst() and atLast() refer to the iterator's arbitrary
ordering, not to the cache's internal least recently used list.
<p> <p>See also <a href="tqintcache.html">TQIntCache</a>, <a href="collection.html">Collection Classes</a>, and <a href="tools.html">Non-GUI Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="TQIntCacheIterator"></a>TQIntCacheIterator::TQIntCacheIterator ( const&nbsp;<a href="tqintcache.html">TQIntCache</a>&lt;type&gt;&nbsp;&amp;&nbsp;cache )
</h3>
<p> Constructs an iterator for <em>cache</em>. The current iterator item is
set to point to the first item in the <em>cache</em> (or rather, the
first item is defined to be the item at which this constructor
sets the iterator to point).
<h3 class=fn><a name="TQIntCacheIterator-2"></a>TQIntCacheIterator::TQIntCacheIterator ( const&nbsp;<a href="tqintcacheiterator.html">TQIntCacheIterator</a>&lt;type&gt;&nbsp;&amp;&nbsp;ci )
</h3>
<p> Constructs an iterator for the same cache as <em>ci</em>. The new
iterator starts at the same item as ci.<a href="#current">current</a>(), but moves
independently from there on.
<h3 class=fn>bool <a name="atFirst"></a>TQIntCacheIterator::atFirst () 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>See also <a href="#toFirst">toFirst</a>() and <a href="#atLast">atLast</a>().
<h3 class=fn>bool <a name="atLast"></a>TQIntCacheIterator::atLast () 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>See also <a href="#toLast">toLast</a>() and <a href="#atFirst">atFirst</a>().
<h3 class=fn>uint <a name="count"></a>TQIntCacheIterator::count () const
</h3>
<p> Returns the number of items in the cache on which this iterator
operates.
<p> <p>See also <a href="#isEmpty">isEmpty</a>().
<h3 class=fn>type * <a name="current"></a>TQIntCacheIterator::current () const
</h3>
<p> Returns a pointer to the current iterator item.
<h3 class=fn>long <a name="currentKey"></a>TQIntCacheIterator::currentKey () const
</h3>
<p> Returns the key for the current iterator item.
<h3 class=fn>bool <a name="isEmpty"></a>TQIntCacheIterator::isEmpty () const
</h3>
<p> Returns TRUE if the cache is empty; otherwise returns FALSE.
<p> <p>See also <a href="#count">count</a>().
<h3 class=fn><a name="operator-type-*"></a>TQIntCacheIterator::operator type * () const
</h3>
<p> Cast operator. Returns a pointer to the current iterator item.
Same as <a href="#current">current</a>().
<h3 class=fn>type * <a name="operator()"></a>TQIntCacheIterator::operator() ()
</h3>
<p> Makes the succeeding item current and returns the original current
item.
<p> If the current iterator item was the last item in the cache or if
it was 0, 0 is returned.
<h3 class=fn>type * <a name="operator++"></a>TQIntCacheIterator::operator++ ()
</h3>
<p> Prefix ++ makes the iterator point to the item just after
<a href="#current">current</a>(), and makes it the new current item for the iterator. If
current() was the last item, <a href="#operator--">operator--</a>() returns 0.
<h3 class=fn>type * <a name="operator+-eq"></a>TQIntCacheIterator::operator+= ( uint&nbsp;jump )
</h3>
<p> Returns the item <em>jump</em> positions after the current item, or 0 if
it is beyond the last item. Makes this the current item.
<h3 class=fn>type * <a name="operator--"></a>TQIntCacheIterator::operator-- ()
</h3>
<p> Prefix -- makes the iterator point to the item just before
<a href="#current">current</a>(), and makes it the new current item for the iterator. If
current() was the first item, <a href="#operator--">operator--</a>() returns 0.
<h3 class=fn>type * <a name="operator--eq"></a>TQIntCacheIterator::operator-= ( uint&nbsp;jump )
</h3>
<p> Returns the item <em>jump</em> positions before the current item, or 0
if it is beyond the first item. Makes this the current item.
<h3 class=fn><a href="tqintcacheiterator.html">TQIntCacheIterator</a>&lt;type&gt;&nbsp;&amp; <a name="operator-eq"></a>TQIntCacheIterator::operator= ( const&nbsp;<a href="tqintcacheiterator.html">TQIntCacheIterator</a>&lt;type&gt;&nbsp;&amp;&nbsp;ci )
</h3>
<p> Makes this an iterator for the same cache as <em>ci</em>. The new
iterator starts at the same item as ci.<a href="#current">current</a>(), but moves
independently thereafter.
<h3 class=fn>type * <a name="toFirst"></a>TQIntCacheIterator::toFirst ()
</h3>
<p> Sets the iterator to point to the first item in the cache and
returns a pointer to the item.
<p> Sets the iterator to 0, and returns 0, if the cache is empty.
<p> <p>See also <a href="#toLast">toLast</a>() and <a href="#isEmpty">isEmpty</a>().
<h3 class=fn>type * <a name="toLast"></a>TQIntCacheIterator::toLast ()
</h3>
<p> Sets the iterator to point to the last item in the cache and
returns a pointer to the item.
<p> Sets the iterator to 0, and returns 0, if the cache is empty.
<p> <p>See also <a href="#toFirst">toFirst</a>() and <a href="#isEmpty">isEmpty</a>().
<!-- eof -->
<hr><p>
This file is part of the <a href="index.html">TQt toolkit</a>.
Copyright &copy; 1995-2007
<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
<table width=100% cellspacing=0 border=0><tr>
<td>Copyright &copy; 2007
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
<td align=right><div align=right>TQt 3.3.8</div>
</table></div></address></body>
</html>