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2016-10-14 13:43:14 +02:00

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<link title="CCSexpM" rel="Chapter" href="CCSexpM.html"><title>Containers doc : CCHashtbl.MakeCounter</title>
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<h1>Functor <a href="type_CCHashtbl.MakeCounter.html">CCHashtbl.MakeCounter</a></h1>
<pre><span class="keyword">module</span> MakeCounter <code class="code">(</code><code class="code"><span class="constructor">X</span></code><code class="code"> : </code><code class="type">Hashtbl.HashedType</code><code class="code">) </code>: <code class="type"><a href="CCHashtbl.COUNTER.html">COUNTER</a></code><code class="type">
with type elt = X.t
and type t = int Hashtbl.Make(X).t</code></pre><div class="info module top">
Create a new counter type
The type <code class="code">t</code> is exposed<br>
<b>Since</b> 0.14<br>
</div>
<table border="0" cellpadding="3" width="100%">
<tr>
<td align="left" valign="top" width="1%%"><b>Parameters: </b></td>
<td>
<table class="paramstable">
<tr>
<td align="center" valign="top" width="15%">
<code>X</code></td>
<td align="center" valign="top">:</td>
<td><code class="type">Hashtbl.HashedType</code>
</table>
</td>
</tr>
</table>
<hr width="100%">
<pre><span id="TYPEelt"><span class="keyword">type</span> <code class="type"></code>elt</span> </pre>
<div class="info ">
Elements that are to be counted<br>
</div>
<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type"></code>t</span> </pre>
<pre><span id="VALcreate"><span class="keyword">val</span> create</span> : <code class="type">int -> <a href="CCHashtbl.COUNTER.html#TYPEt">t</a></code></pre><div class="info ">
A counter maps elements to natural numbers (the number of times this
element occurred)<br>
</div>
<pre><span id="VALincr"><span class="keyword">val</span> incr</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> <a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> -> unit</code></pre><div class="info ">
Increment the counter for the given element<br>
</div>
<pre><span id="VALincr_by"><span class="keyword">val</span> incr_by</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> int -> <a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> -> unit</code></pre><div class="info ">
Add or remove several occurrences at once. <code class="code">incr_by c x n</code>
will add <code class="code">n</code> occurrences of <code class="code">x</code> if <code class="code">n&gt;0</code>,
and remove <code class="code">abs n</code> occurrences if <code class="code">n&lt;0</code>.<br>
</div>
<pre><span id="VALget"><span class="keyword">val</span> get</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> <a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> -> int</code></pre><div class="info ">
Number of occurrences for this element<br>
</div>
<pre><span id="VALdecr"><span class="keyword">val</span> decr</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> <a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> -> unit</code></pre><div class="info ">
Remove one occurrence of the element<br>
<b>Since</b> 0.14<br>
</div>
<pre><span id="VALlength"><span class="keyword">val</span> length</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> int</code></pre><div class="info ">
Number of distinct elements<br>
<b>Since</b> 0.14<br>
</div>
<pre><span id="VALadd_seq"><span class="keyword">val</span> add_seq</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> <a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> <a href="CCHashtbl.html#TYPEsequence">CCHashtbl.sequence</a> -> unit</code></pre><div class="info ">
Increment each element of the sequence<br>
</div>
<pre><span id="VALof_seq"><span class="keyword">val</span> of_seq</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> <a href="CCHashtbl.html#TYPEsequence">CCHashtbl.sequence</a> -> <a href="CCHashtbl.COUNTER.html#TYPEt">t</a></code></pre><div class="info ">
<code class="code">of_seq s</code> is the same as <code class="code">add_seq (create ())</code><br>
</div>
<pre><span id="VALto_seq"><span class="keyword">val</span> to_seq</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> (<a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> * int) <a href="CCHashtbl.html#TYPEsequence">CCHashtbl.sequence</a></code></pre><div class="info ">
<code class="code">to_seq tbl</code> returns elements of <code class="code">tbl</code> along with their multiplicity<br>
<b>Since</b> 0.14<br>
</div>
<pre><span id="VALadd_list"><span class="keyword">val</span> add_list</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> (<a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> * int) list -> unit</code></pre><div class="info ">
Similar to <a href="CCHashtbl.COUNTER.html#VALadd_seq"><code class="code"><span class="constructor">CCHashtbl</span>.<span class="constructor">COUNTER</span>.add_seq</code></a><br>
<b>Since</b> 0.14<br>
</div>
<pre><span id="VALof_list"><span class="keyword">val</span> of_list</span> : <code class="type">(<a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> * int) list -> <a href="CCHashtbl.COUNTER.html#TYPEt">t</a></code></pre><div class="info ">
Similar to <a href="CCHashtbl.COUNTER.html#VALof_seq"><code class="code"><span class="constructor">CCHashtbl</span>.<span class="constructor">COUNTER</span>.of_seq</code></a><br>
<b>Since</b> 0.14<br>
</div>
<pre><span id="VALto_list"><span class="keyword">val</span> to_list</span> : <code class="type"><a href="CCHashtbl.COUNTER.html#TYPEt">t</a> -> (<a href="CCHashtbl.COUNTER.html#TYPEelt">elt</a> * int) list</code></pre><div class="info ">
<b>Since</b> 0.14<br>
</div>
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