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<div class="titlepage">
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<div>
<h2 class="title" style="clear: both"><a id="stldb_mapequal_range"></a>equal_range</h2>
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<h3 class="title"><a id="stldb_mapequal_range_details"></a>Function Details</h3>
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<pre class="programlisting">
equal_range(const key_type &x) const
</pre>
<p>Find the range within which all keys equal to specified key x. </p>
<div class="sect3" lang="en" xml:lang="en">
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<h4 class="title"><a id="idp50503304"></a>Parameters</h4>
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<h5 class="title"><a id="idp50511448"></a>x</h5>
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<p>The target key to find. </p>
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<div class="sect3" lang="en" xml:lang="en">
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<h4 class="title"><a id="idp50509920"></a>Return Value</h4>
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<p>The range [first, last). </p>
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<h4 class="title"><a id="idp50510240"></a>See Also</h4>
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<p>
</p>
<p><a class="ulink" href="http://www.cplusplus.com/reference/stl/map/equal_range/" target="_top">http://www.cplusplus.com/reference/stl/map/equal_range/</a> </p>
<p>
</p>
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<pre class="programlisting">
equal_range(const key_type &x,
bool readonly=false)
</pre>
<p>Find the range within which all keys equal to specified key x. </p>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
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<h4 class="title"><a id="idp50500816"></a>Parameters</h4>
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<h5 class="title"><a id="idp50501008"></a>x</h5>
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<p>The target key to find. </p>
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<div class="sect4" lang="en" xml:lang="en">
<div class="titlepage">
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<h5 class="title"><a id="idp50503968"></a>readonly</h5>
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<p>Whether the returned iterator is readonly. </p>
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<div class="sect3" lang="en" xml:lang="en">
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<h4 class="title"><a id="idp50504288"></a>Return Value</h4>
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<p>The range [first, last). </p>
</div>
<div class="sect3" lang="en" xml:lang="en">
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<h4 class="title"><a id="idp50504640"></a>See Also</h4>
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<p><a class="ulink" href="http://www.cplusplus.com/reference/stl/map/equal_range/" target="_top">http://www.cplusplus.com/reference/stl/map/equal_range/</a> </p>
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<p>The following functions are returning iterators, and they by default return read-write iterators.</p>
<p>If you intend to use the returned iterator only to read, you should call the const version of each function using a const reference to this container. Using const iterators can potentially promote concurrency a lot. You can also set the readonly parameter to each non-const version of the functions to true if you don't use the returned iterator to write, which also promotes concurrency and overall performance. </p>
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