ple"></a></span><a class="link" href="function_output.html#iterator.specialized.function_output.example">Example</a>
      </h3>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">string_appender</span>
<span class="special">{</span>
    <span class="identifier">string_appender</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&amp;</span> <span class="identif