title: std::tr1::mem_fn return type
body: <p>I want to put the result of this:</p>
  
  <pre><code>std::tr1::mem_fn(&amp;ClassA::method);
  </code></pre>
  
  <p>Inside a variable, what is the type of this variable ?</p>
  
  <p>That will look something like this:</p>
  
  <pre><code>MagicalType fun = std::tr1::mem_fn(&amp;ClassA::method);
  </code></pre>
  
  <p>Also, what is the result type of <code>std::tr1::bind</code> ?</p>
  
  <p>Thank you !</p>