mem_fun1_t

A class for binding a member function.

  template<class S, class T, class A>

  class mem_fun1_t : public binary_function<T*,A, S>

  explicit mem_fun1_t(S (T::*p)(A));  

The constructor for mem_fun1_t calls the member function that it is initialized with using a given a pointer argument and an appropriate additional argument.