add_const Class

2018-01-02

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

Makes const type from type.

Syntax

template <class Ty>  
struct add_const;

Parameters

Ty
The type to modify.

Remarks

An instance of the type modifier holds a modified-type that is Ty if Ty is a reference, a function, or a const-qualified type, otherwise const Ty.

Example

// std_tr1__type_traits__add_const.cpp   
// compile with: /EHsc   
#include <type_traits>   
#include <iostream>   
  
int main()   
    {   
    std::add_const<int>::type *p = (const int *)0;   
  
    p = p;  // to quiet "unused" warning   
    std::cout << "add_const<int> == "   
        << typeid(*p).name() << std::endl;   
  
    return (0);   
    }

add_const<int> == int

Requirements

Header: <type_traits>

Namespace: std

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