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is_member_pointer Class


The latest version of this topic can be found at is_member_pointer Class.

Tests if type is a pointer to member.

template <class Ty>  
struct is_member_pointer;  


The type to query.

An instance of the type predicate holds true if the type Ty is a pointer to member function or a pointer to member object, or a cv-qualified form of one of them, otherwise it holds false.

// std_tr1__type_traits__is_member_pointer.cpp   
// compile with: /EHsc   
#include <type_traits>   
#include <iostream>   
struct trivial   
    int val;   
struct functional   
    int f();   
int main()   
    std::cout << "is_member_pointer<trivial *> == "   
        << std::boolalpha   
        << std::is_member_pointer<trivial *>::value   
        << std::endl;   
    std::cout << "is_member_pointer<int trivial::*> == "   
        << std::boolalpha   
        << std::is_member_pointer<int trivial::*>::value   
        << std::endl;   
    std::cout << "is_member_pointer<int (functional::*)()> == "   
        << std::boolalpha   
        << std::is_member_pointer<int (functional::*)()>::value   
        << std::endl;   
    return (0);   

is_member_pointer<trivial *> == false  
is_member_pointer<int trivial::*> == true  
is_member_pointer<int (functional::*)()> == true  

Header: <type_traits>

Namespace: std

is_member_function_pointer Class
is_member_object_pointer Class
is_pointer Class