title: How to introduce a static name in a class to a scope?
body: <p>For example </p>
  
  <pre><code>struct A
  {
      static void foo();
      static void foo(int);
      static void foo(double, char);
      ...
  };
  </code></pre>
  
  <p>and in a scope</p>
  
  <pre><code>namespace nm
  {
      using A::foo; // not right
  }
  </code></pre>
  
  <p>How to introduce a static name in a class to a scope?</p>