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<title>Map.OrderedType</title>
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<center><h1>Module type <a href="type_Map.OrderedType.html">Map.OrderedType</a></h1></center>
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<pre><span class="keyword">module type</span> OrderedType : <code><span class="keyword">sig</span> ... <span class="keyword">end</span></code></pre><div class="info">
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Input signature of the functor <a href="Map.Make.html"><code><span class="constructor">Map</span>.<span class="constructor">Make</span></code></a>.<br>
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<br><code><span class="keyword">type</span> <a name="TYPEt"></a>t </code>
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The type of the map keys.<br>
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<pre><span class="keyword">val</span> <a name="VALcompare"></a>compare : <code class="type"><a href="Map.OrderedType.html#TYPEt">t</a> -> <a href="Map.OrderedType.html#TYPEt">t</a> -> int</code></pre><div class="info">
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A total ordering function over the keys.
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This is a two-argument function <code>f</code> such that
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<code>f e1 e2</code> is zero if the keys <code>e1</code> and <code>e2</code> are equal,
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<code>f e1 e2</code> is strictly negative if <code>e1</code> is smaller than <code>e2</code>,
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and <code>f e1 e2</code> is strictly positive if <code>e1</code> is greater than <code>e2</code>.
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Example: a suitable ordering function is
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the generic structural comparison function <a href="Pervasives.html#VALcompare"><code><span class="constructor">Pervasives</span>.compare</code></a>.<br>
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