add_lvalue_reference Class
The latest version of this topic can be found at add_lvalue_reference Class.
Makes reference to type from type.
Syntax
template <class T>
struct add_lvalue_reference;
template <class T>
using add_lvalue_reference_t = typename add_lvalue_reference<T>::type;
Parameters
T
The type to modify.
Remarks
An instance of the type modifier holds a modified-type that is T if T is an lvalue reference, otherwise T&.
Example
#include <type_traits>
#include <iostream>
using namespace std;
int main()
{
int val = 0;
add_lvalue_reference_t<int> p = (int&)val;
p = p; // to quiet "unused" warning
cout << "add_lvalue_reference_t<int> == "
<< typeid(p).name() << endl;
return (0);
}
add_lvalue_reference_t<int> == int
Requirements
Header: <type_traits>
Namespace: std