gt;</span>
</pre>
<p>
      But this fails with a compiler error if there is no such nested type, and that
      is exactly what we do not want in our compile-time metaprogramming code.
    </p>
<p>
      In the above metafunction we are asking whether or not FindType has a static
      member data element called 'MyData', and the result will be 'false' if either
      FindType does not exist or if it does exist but does not have a static member
      data of type 'int' called 'MyData'. In neither situation