l reference is mutable (i.e. its channels can be changed)  
 <a href="structboost_1_1gil_1_1pixel__reference__is__mutable.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="metafunctions_8hpp_source.html">metafunctions.hpp</a>&gt;</code></p>

<p>Inherits integral_constant&lt; bool, std::remove_reference&lt; R &gt;::type::is_mutable &gt;.</p>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename R&gt;<br />
s