class template
<functional>

std::const_mem_fun1_ref_t

template <class S, class T, class A> class const_mem_fun1_ref_t;
Generate function object class from single-parameter const member (reference version)
Generates a binary function object class from a constant member of class T that takes an argument of type A and returns a value of type S.

const_mem_fun1_ref_t is generally used as a type. The function mem_fun_ref (also defined in header <functional>) can be used to directly construct an object of this type.

This class is derived from binary_function and is typically defined as:

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template <class S, class T, class A>
  class mem_fun1_ref_t : public binary_function <T,A,S>
{
  S (T::*pmem)(A) const;
public:
  explicit mem_fun1_ref_t ( S (T::*p)(A) const ) : pmem (p) {}
  S operator() (T& p, A x) const
    { return (p.*pmem)(x); }
};


Members

constructor
Constructs a binary function object class from const member function p of class T. The return type of this member function shall be type compatible with type S.
S operator() (T& p, A x)
Member function taking two parameters: p is an object of type T whose const member is to be called with x as argument.

See also

mem_fun_ref
Convert member function to function object (reference version) (function template )
mem_fun1_ref_t
Generate function object class from single-parameter member (reference version) (class template )
const_mem_fun_ref_t
Generate function object class from const parameterless member (reference version) (class template )
binary_function
Binary function object base class (class template )

C++