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I/O Manipulators with Parameters - 2

  • Generic overload of output operator
  • template < class F > // function class
    std::ostream& operator<< (std::ostream& os, F f) //  function object
    {
      f(os); // apply f.operator() to os
      return os;
    }
    
  • Analogous generic overload of input operator
  • template < class F >
    std::istream& operator>> (std::istream& is, F f)
    {
      f(is);
      return is;
    }
    

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