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title="BatVect" rel="Chapter" href="BatVect.html"> <link title="Batteries" rel="Chapter" href="Batteries.html"> <link title="BatteriesConfig" rel="Chapter" href="BatteriesConfig.html"> <link title="BatteriesPrint" rel="Chapter" href="BatteriesPrint.html"> <link title="BatteriesThread" rel="Chapter" href="BatteriesThread.html"> <link title="Extlib" rel="Chapter" href="Extlib.html"><title>Batteries user guide : BatHashcons</title> </head> <body> <div class="navbar"><a class="pre" href="BatGlobal.html" title="BatGlobal">Previous</a> <a class="up" href="index.html" title="Index">Up</a> <a class="post" href="BatHashtbl.html" title="BatHashtbl">Next</a> </div> <h1>Module <a href="type_BatHashcons.html">BatHashcons</a></h1> <pre><span class="keyword">module</span> BatHashcons: <code class="code"><span class="keyword">sig</span></code> <a href="BatHashcons.html">..</a> <code class="code"><span class="keyword">end</span></code></pre><div class="info module top"> Hash consing of data structures<br> </div> <hr width="100%"> <pre><code><span id="TYPEhobj"><span class="keyword">type</span> <code class="type">'a</code> hobj</span> = private {</code></pre><table class="typetable"> <tr> <td align="left" valign="top" > <code> </code></td> <td align="left" valign="top" > <code><span id="TYPEELThobj.obj">obj</span> : <code class="type">'a</code>;</code></td> </tr> <tr> <td align="left" valign="top" > <code> </code></td> <td align="left" valign="top" > <code><span id="TYPEELThobj.tag">tag</span> : <code class="type">int</code>;</code></td> <td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >Unique id for this object</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td> </tr> <tr> <td align="left" valign="top" > <code> </code></td> <td align="left" valign="top" > <code><span id="TYPEELThobj.hcode">hcode</span> : <code class="type">int</code>;</code></td> <td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >Hash code for this object</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td> </tr></table> } <div class="info "> The type <code class="code">t hobj</code> represents hashed objects of type <code class="code">t</code>. A hashed object contains a unique tag and a hash code.<br> </div> <pre><span id="TYPEt"><span class="keyword">type</span> <code class="type">'a</code> t</span> = <code class="type">'a <a href="BatHashcons.html#TYPEhobj">hobj</a></code> </pre> <div class="info "> A synonym for convenience<br> </div> <pre><span id="VALcompare"><span class="keyword">val</span> compare</span> : <code class="type">'a <a href="BatHashcons.html#TYPEhobj">hobj</a> -> 'a <a href="BatHashcons.html#TYPEhobj">hobj</a> -> int</code></pre><div class="info "> Comparison on the tags<br> </div> <pre><span class="keyword">module type</span> <a href="BatHashcons.Table.html">Table</a> = <code class="code"><span class="keyword">sig</span></code> <a href="BatHashcons.Table.html">..</a> <code class="code"><span class="keyword">end</span></code></pre><div class="info"> Hashcons tables </div> <pre><span class="keyword">module</span> <a href="BatHashcons.MakeTable.html">MakeTable</a>: <div class="sig_block"><code class="code"><span class="keyword">functor</span> (</code><code class="code"><span class="constructor">HT</span></code><code class="code"> : </code><code class="type"><a href="BatHashtbl.HashedType.html">BatHashtbl.HashedType</a></code><code class="code">) <span class="keywordsign">-></span> </code><code class="type"><a href="BatHashcons.Table.html">Table</a></code><code class="type"> with type key = HT.t</code></div></pre> <pre><span class="keyword">module</span> <a href="BatHashcons.H.html">H</a>: <code class="code"><span class="keyword">sig</span></code> <a href="BatHashcons.H.html">..</a> <code class="code"><span class="keyword">end</span></code></pre><div class="info"> Hashing utilities </div> </body></html>