Namespaces
Variants

    std::remove_reference

    From cppreference.com
     
    C++
     
    Metaprogramming library
    Type traits
    Type categories
    (C++11)
    (C++11)(DR*)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11) 
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)  
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    Type properties
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++14)
    (C++11)
    (C++17)
    (C++23)
    (C++11)(deprecated in C++26)
    (C++11)
    (C++11)
    (C++11)(until C++20*)
    (C++11)(deprecated in C++20)
    (C++11)
    (C++11)
    (C++20)
    (C++20)
    (C++23)
    (C++17)
    Type trait constants
    (C++11)(C++17)(C++11)(C++11)
    Metafunctions
    (C++17)
    (C++17)
    (C++17)
    Supported operations
    Relationships and property queries
    Type modifications
    (C++11)(C++11)(C++11)
    (C++11)(C++11)(C++11)
    (C++11)
    (C++11)
    Type transformations
    (C++11)(deprecated in C++23)
    (C++11)(deprecated in C++23)
    (C++11)
    (C++20)
    (C++11)(until C++20*)(C++17)

    (C++11)
    (C++11)
    (C++20)
    (C++11)
    (C++20)
    (C++11)
    (C++17)
    Compile-time rational arithmetic
    Compile-time integer sequences
    (C++14)
     
    Defined in header <type_traits>
    template< class T > struct remove_reference;
    		 (since C++11)
    See More

    If the type T is a reference type, provides the member typedef type which is the type referred to by T. Otherwise type is T.

    If the program adds specializations for std::remove_reference, the behavior is undefined.

    Member types

    Name Definition
    type the type referred by T or T if it is not a reference

    Helper types

    template< class T > using remove_reference_t = typename remove_reference<T>::type;
    		 (since C++14)

    Possible implementation

    template<class T> struct remove_reference { typedef T type; };
template<class T> struct remove_reference<T&> { typedef T type; };
template<class T> struct remove_reference<T&&> { typedef T type; };

    Example

    Run this code
    #include <iostream>
#include <type_traits>

int main()
{
    std::cout << std::boolalpha;

    std::cout << "std::remove_reference<int>::type is int? "
              << std::is_same<int, std::remove_reference<int>::type>::value << '\n';
    std::cout << "std::remove_reference<int&>::type is int? "
              << std::is_same<int, std::remove_reference<int&>::type>::value << '\n';
    std::cout << "std::remove_reference<int&&>::type is int? "
              << std::is_same<int, std::remove_reference<int&&>::type>::value << '\n';
    std::cout << "std::remove_reference<const int&>::type is const int? "
              << std::is_same<const int,
                              std::remove_reference<const int&>::type>::value << '\n';
}

    Output: 

    std::remove_reference<int>::type is int? true
std::remove_reference<int&>::type is int? true
std::remove_reference<int&&>::type is int? true
std::remove_reference<const int&>::type is const int? true

    See also

    (C++11)
    		 checks if a type is either an lvalue reference or rvalue reference
    (class template) [edit]
    (C++11)(C++11)
    		 adds an lvalue or rvalue reference to the given type
    (class template) [edit]
    (C++20)
    		 combines std::remove_cv and std::remove_reference
    (class template) [edit]