dentifier">has_trivial_assign</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;::</span><span class="identifier">value</span></code> is true only if T has a trivial assignment
      operator. This class "just works" for scalar types, but has to be
      explicitly specialised for class/struct types that also happen to have a trivial
      assignment operator. In other words if <a class="link" href="reference/has_trivial_assign.html" title="has_trivial_assign"