class template
<type_traits>

std::remove_const

template <class T> struct remove_const;
Remove const qualification
Obtains the type T without top-level const qualification.

The transformed type is aliased as member type remove_const::type.

If T is const-qualified, this is the same type as T but with its const-qualification removed. Otherwise, it is T unchanged.

Notice that this class merely obtains a type using another type as model, but it does not transform values or objects between those types. To explicitly remove the const-qualifier of an object, const_cast can be used.

Template parameters

T
A type.

Member types

member typedefinition
typeIf T is const-qualified, the same type as T but with the const-qualification removed.
Otherwise, T

Example

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
// remove_const example
#include <iostream>
#include <type_traits>

int main() {
  typedef const char cc;
  std::remove_const<cc>::type a;             // char a
  std::remove_const<const char*>::type b;    // const char* b
  std::remove_const<char* const>::type c;    // char* c

  a = 'x';
  b = "remove_const";
  c = new char[10];

  std::cout << b << std::endl;

  return 0;
}


Output:
remove_const

See also

<type_traits>