late:</p>

  <ul>
    <li><tt>ptr_fun</tt></li>
  </ul>

  <p>However, you should not need to use the adapters in conjunction with the
  adapters in this library due to our use of <a href=
  "function_traits.html">function object traits</a>. You will however need to
  use them if your implementation fails to work properly with our traits
  classes (due to lack if partial specialisation), or if you wish to use a
  function object adapter from a third party.</p>

  <h3>Usage</h3>

  <p>If you need to use thes