const_mem_fun_t 클래스
단항 함수 개체로 호출되어 참조 인수를 사용하여 초기화될 때 인수를 취하지 않는 상수 멤버 함수를 사용할 수 있는 어댑터 클래스
template<class Result, class Type>
class const_mem_fun_t : public unary_function <Type *, Result>
{
explicit const_mem_fun_t( Result ( Type::* _Pm )( ) const );
Result operator()(
const Type* _Pleft
) const;
};
매개 변수
_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.
반환 값
An adaptable unary function.
설명
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)() const.
예제
The constructor of const_mem_fun_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.
요구 사항
헤더: <기능>
네임스페이스: std