const_mem_fun_ref_t

A function adaptor for a constant member reference.

  template<class S, class T> 

  class const_mem_fun_ref_t<S,T> : public unary_function<T,S> 

  explicit const_mem_fun_ref_t( S (T::*p) () const);  

The template functions mem_fun_ref returns an object through which X::f can be called.

The constructor for const_mem_fun_ref_t calls the member function that it is initialized with using a given a reference argument.