title: __gnu_cxx hash map with keys of type std::pair<std::string, unsigned int>?
body: <p>Since <code>std::pair&lt;std::string, unsigned int&gt;</code> is not defined for __gnu_cxx hash map, how do I create a __gnu_cxx hash map with keys of type <code>std::pair&lt;std::string, unsigned int&gt;</code> and values of type <code>std::pair&lt;int, CBTNODE&gt;</code>? (<code>CBTNODE</code> is <code>typedef</code> as <code>typedef int CBTNODE</code>) </p>
  
  <p>If it's possible, I would really want to substitute <code>std::pair&lt;std::string, unsigned int&gt;</code> with a typedef-ed <code>INDEX</code> (<code>typedef std::pair&lt;std::string, unsigned int&gt; INDEX</code>)</p>
  
  <p>Any help will be much appreciated!</p>
  
  <p>Z.Zen</p>