<p>Here, the functors <tt>fa</tt>, <tt>fb</tt> and <tt>fc</tt> all expect the
signature <tt>void operator()(unsigned n) const</tt>.</p>
<h2>Directives and Actions</h2>
<p>Here, the functors <tt>fa</tt>, <tt>fb</tt> and <tt>fc</tt> all expect the
signature <tt>void operator()(unsigned n) const</tt>.</p>
<h2>Directives and Actions</h2>