entifier">MyFindType</span><span class="special">;</span>
</pre>
<p>
      We can use the above typedef to pass the type as FindType to one of our macro
      metafunctions. FindType may not actually exist but we will not generate a compiler
      error when we use it. It will only generate, if it does not exist, an eventual
      failure by having whatever metafunction uses such a type return a false value
      at compile-time.
    </p>
<p>
      As one example, let's ask whether FindType has a static mem