e class="computeroutput"><a class="link" href="reference/has_trivial_assign.html" title="has_trivial_assign">has_trivial_assign</a><span class="special">&lt;</span><span class="identifier">value_type</span><span class="special">&gt;()</span></code> as the final parameter: this will dispatch
      to the optimized version where appropriate, otherwise it will call the "slow
      but safe version".
    </p>
<h5>
<a name="boost_typetraits.background.h3"></a>
      <span class="phrase"><a name="boost_typetraits