a class="code" href="g_i_l_0515.html#da0e3adfe5f3db62623fb73a49c120b3">_n</a>) {}
<a name="l00364"></a>00364 
<a name="l00365"></a>00365         <span class="keywordtype">int</span> _n;        <span class="comment">// the channel to use</span>
<a name="l00366"></a>00366 
<a name="l00367"></a>00367         result_type operator()(argument_type srcP)<span class="keyword"> const </span>{ 
<a name="l00368"></a>00368             <span class="keywordflow">return</span> result_type(srcP[_n]); 
<a name="l00369"></a>