">struct </span><a class="code" href="g_i_l_0515.html" title="Function object that returns a grayscale reference of the N-th channel of a given...">nth_channel_deref_fn</a> {
<a name="l00348"></a>00348         BOOST_STATIC_CONSTANT(<span class="keywordtype">bool</span>, is_mutable=<a class="code" href="g_i_l_0600.html" title="Given a model of a pixel, determines whether the model represents a pixel reference...">pixel_is_reference&lt;SrcP&gt;::value</a> &amp;&amp; <a class="code" href="g_i_l_0602.html" titl