is_member_pointer Class

 

For the latest documentation on Visual Studio 2017, see Visual Studio 2017 Documentation.

Tests if type is a pointer to member.

template <class Ty>  
struct is_member_pointer;  

Parameters

Ty
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

<type_traits>
is_member_function_pointer Class
is_member_object_pointer Class
is_pointer Class

Show: