mem_fun1_t Class

An adapter class that allows a non_const member function that takes a single argument to be called as a binary function object when initialized with a pointer argument.

template<class Result, class Type, class Arg>
   class mem_fun1_t : public binary_function<Type *, Arg, Result> {
      explicit mem_fun1_t(
         Result (Type::* _Pm )( Arg ) 
         );
      Result operator()(
         Type* _Pleft, 
         Arg _Right
         ) const;
   };

Parameters

• _Pm
  A pointer to the member function of class Type to be converted to a function object.

• _Pleft
  The object that the _Pm member function is called on.

• _Right
  The argument that is being given to _Pm.

Return Value

An adaptable binary function.

Remarks

The template class stores a copy of _Pm, which must be a pointer to a member function of class Type, in a private member object. It defines its member function operator() as returning (_Pleft->* _Pm)(_Right).

Example

The constructor of mem_fun1_t is not usually used directly; the helper function mem_fun is used to adapt member functions. See mem_fun for an example of how to use member function adaptors.

Requirements

Header: <functional>

Namespace: std

See Also

Reference

Thread Safety in the C++ Standard Library

Standard Template Library