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<div class="chlinktop"><span class="chlink1">Goto Chapter: </span><a href="chap0.html">Top</a>  <a href="chap1.html">1</a>  <a href="chap2.html">2</a>  <a href="chap3.html">3</a>  <a href="chap4.html">4</a>  <a href="chap5.html">5</a>  <a href="chap6.html">6</a>  <a href="chap7.html">7</a>  <a href="chap8.html">8</a>  <a href="chap9.html">9</a>  <a href="chap10.html">10</a>  <a href="chapInd.html">Ind</a>  </div>

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<p id="mathjaxlink" class="pcenter"><a href="chap7_mj.html">[MathJax on]</a></p>
<p><a id="X81C68E82799A72EA" name="X81C68E82799A72EA"></a></p>
<div class="ChapSects"><a href="chap7.html#X81C68E82799A72EA">7 <span class="Heading">Pointers</span></a>
<div class="ContSect"><span class="tocline"><span class="nocss"> </span><a href="chap7.html#X86D963DC7968899B">7.1 <span class="Heading">Weak pointer objects</span></a>
</span>
<div class="ContSSBlock">
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X7AF6D36B86EF4FBD">7.1-1 IsContainerForWeakPointers</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X78528671799AA08D">7.1-2 ContainerForWeakPointers</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X81A9F7857F8526B2">7.1-3 UpdateContainerOfWeakPointers</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X7E59DD5B8396C63B">7.1-4 _AddElmWPObj_ForHomalg</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X7E229DC980597F0D">7.1-5 _AddTwoElmWPObj_ForHomalg</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X7FD47F2B820F45E1">7.1-6 _ElmWPObj_ForHomalg</a></span>
</div></div>
<div class="ContSect"><span class="tocline"><span class="nocss"> </span><a href="chap7.html#X7D48F98C7CA131A2">7.2 <span class="Heading">Pointer objects</span></a>
</span>
<div class="ContSSBlock">
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X820FC040793F6725">7.2-1 IsContainerForPointers</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X7B40EDC784E11197">7.2-2 ContainerForPointers</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X79FC60458580DCAB">7.2-3 UpdateContainerOfPointers</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X81EB136386E98806">7.2-4 _AddElmPObj_ForHomalg</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X7C77C0C384F45C0C">7.2-5 _AddTwoElmPObj_ForHomalg</a></span>
<span class="ContSS"><br /><span class="nocss">  </span><a href="chap7.html#X854EF9EA85DB1E4F">7.2-6 _ElmPObj_ForHomalg</a></span>
</div></div>
</div>

<h3>7 <span class="Heading">Pointers</span></h3>

<p><a id="X86D963DC7968899B" name="X86D963DC7968899B"></a></p>

<h4>7.1 <span class="Heading">Weak pointer objects</span></h4>

<p><a id="X7AF6D36B86EF4FBD" name="X7AF6D36B86EF4FBD"></a></p>

<h5>7.1-1 IsContainerForWeakPointers</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ IsContainerForWeakPointers</code>( <var class="Arg">arg</var> )</td><td class="tdright">( filter )</td></tr></table></div>
<p>Returns: <code class="keyw">true</code> or <code class="keyw">false</code></p>

<p>The category for weak pointer objects</p>

<p><a id="X78528671799AA08D" name="X78528671799AA08D"></a></p>

<h5>7.1-2 ContainerForWeakPointers</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ ContainerForWeakPointers</code>( <var class="Arg">arg</var> )</td><td class="tdright">( function )</td></tr></table></div>
<p>Returns: a list which can store weak pointers</p>

<p>The constructor for lists of weak pointers.</p>

<p><a id="X81A9F7857F8526B2" name="X81A9F7857F8526B2"></a></p>

<h5>7.1-3 UpdateContainerOfWeakPointers</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ UpdateContainerOfWeakPointers</code>( <var class="Arg">arg</var> )</td><td class="tdright">( operation )</td></tr></table></div>
<p>Updates the weak pointers in a container and deletes the empty ones</p>

<p><a id="X7E59DD5B8396C63B" name="X7E59DD5B8396C63B"></a></p>

<h5>7.1-4 _AddElmWPObj_ForHomalg</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ _AddElmWPObj_ForHomalg</code>( <var class="Arg">arg</var> )</td><td class="tdright">( function )</td></tr></table></div>
<p>Adds a weak pointer of an objects to a weak pointer list.</p>

<p><a id="X7E229DC980597F0D" name="X7E229DC980597F0D"></a></p>

<h5>7.1-5 _AddTwoElmWPObj_ForHomalg</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ _AddTwoElmWPObj_ForHomalg</code>( <var class="Arg">arg</var> )</td><td class="tdright">( function )</td></tr></table></div>
<p>Adds a weak pointer which depends on two objects to a list of weak pointers</p>

<p><a id="X7FD47F2B820F45E1" name="X7FD47F2B820F45E1"></a></p>

<h5>7.1-6 _ElmWPObj_ForHomalg</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ _ElmWPObj_ForHomalg</code>( <var class="Arg">arg1</var>, <var class="Arg">arg2</var>, <var class="Arg">arg3</var> )</td><td class="tdright">( operation )</td></tr></table></div>
<p>Creates a weak pointer depending on two objects and adds it to the container.</p>

<p><a id="X7D48F98C7CA131A2" name="X7D48F98C7CA131A2"></a></p>

<h4>7.2 <span class="Heading">Pointer objects</span></h4>

<p><a id="X820FC040793F6725" name="X820FC040793F6725"></a></p>

<h5>7.2-1 IsContainerForPointers</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ IsContainerForPointers</code>( <var class="Arg">arg</var> )</td><td class="tdright">( filter )</td></tr></table></div>
<p>Returns: <code class="keyw">true</code> or <code class="keyw">false</code></p>

<p>The category for pointer objects</p>

<p><a id="X7B40EDC784E11197" name="X7B40EDC784E11197"></a></p>

<h5>7.2-2 ContainerForPointers</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ ContainerForPointers</code>( <var class="Arg">arg</var> )</td><td class="tdright">( function )</td></tr></table></div>
<p>Returns: a container for pointers</p>

<p>Creates a container for pointers.</p>

<p><a id="X79FC60458580DCAB" name="X79FC60458580DCAB"></a></p>

<h5>7.2-3 UpdateContainerOfPointers</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ UpdateContainerOfPointers</code>( <var class="Arg">arg</var> )</td><td class="tdright">( operation )</td></tr></table></div>
<p>Updates the container of pointers, removes old.</p>

<p><a id="X81EB136386E98806" name="X81EB136386E98806"></a></p>

<h5>7.2-4 _AddElmPObj_ForHomalg</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ _AddElmPObj_ForHomalg</code>( <var class="Arg">arg</var> )</td><td class="tdright">( function )</td></tr></table></div>
<p>Adds a pointer to an object to a container for pointers.</p>

<p><a id="X7C77C0C384F45C0C" name="X7C77C0C384F45C0C"></a></p>

<h5>7.2-5 _AddTwoElmPObj_ForHomalg</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ _AddTwoElmPObj_ForHomalg</code>( <var class="Arg">arg</var> )</td><td class="tdright">( function )</td></tr></table></div>
<p>Adds a pointer to two objects to a container for pointers</p>

<p><a id="X854EF9EA85DB1E4F" name="X854EF9EA85DB1E4F"></a></p>

<h5>7.2-6 _ElmPObj_ForHomalg</h5>

<div class="func"><table class="func" width="100%"><tr><td class="tdleft"><code class="func">‣ _ElmPObj_ForHomalg</code>( <var class="Arg">arg1</var>, <var class="Arg">arg2</var>, <var class="Arg">arg3</var> )</td><td class="tdright">( operation )</td></tr></table></div>
<p>Returns: an object</p>

<p>Returns an object which a pointer refers to.</p>


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