    Distributed under the Boost Software License, Version 1.0.
     (http://www.boost.org/LICENSE_1_0.txt)
--><div class="section" id="faq">
<h1>FAQ<a class="headerlink" href="#faq" title="Permalink to this headline">¶</a></h1>
<div class="section" id="q-why-is-const-required-for-the-call-operator-on-function-objects">
<h2>Q: Why is <code class="docutils literal"><span class="pre">const</span></code> required for the call operator on function objects?<a class="headerlink" href="#q-why-is-const-required-for