<span class="identifier">iterator_range</span><span class="special"><</span> <span class="keyword">typename</span> <span class="identifier">range_iterator</span><span class="special"><</span> <span class="identifier">RangeT</span> <span class="special">></span><span class="special">::</span><span class="identifier">type</span> <span class="special">></span>
<span class="identifier">find_head</span><span class="special">(</span><span class="identifier">RangeT</span> <span class="special">&</span> Input<span class="special">,</span> <span class="keyword">int</span> N<span class="special">)</span><span class="special">;</span></pre></div>
<div class="refsect1">
-<a name="idp116699776"></a><h2>Description</h2>
+<a name="idp128103296"></a><h2>Description</h2>
<p>Get the head of the input. Head is a prefix of the string of the given size. If the input is shorter then required, whole input is considered to be the head.</p>
<p>