Defined in header <type_traits> | ||
|---|---|---|
template< class T > struct remove_pointer; | (since C++11) |
Provides the member typedef type which is the type pointed to by T, or, if T is not a pointer, then type is the same as T.
The behavior of a program that adds specializations for remove_pointer is undefined.
| Name | Definition |
|---|---|
type | the type pointed to by T or T if it's not a pointer |
template< class T > using remove_pointer_t = typename remove_pointer<T>::type; | (since C++14) |
template<class T> struct remove_pointer { typedef T type; };
template<class T> struct remove_pointer<T*> { typedef T type; };
template<class T> struct remove_pointer<T* const> { typedef T type; };
template<class T> struct remove_pointer<T* volatile> { typedef T type; };
template<class T> struct remove_pointer<T* const volatile> { typedef T type; }; |
#include <type_traits>
static_assert
(
std::is_same_v<int, int> == true &&
std::is_same_v<int, int*> == false &&
std::is_same_v<int, int**> == false &&
std::is_same_v<int, std::remove_pointer_t<int>> == true &&
std::is_same_v<int, std::remove_pointer_t<int*>> == true &&
std::is_same_v<int, std::remove_pointer_t<int**>> == false &&
std::is_same_v<int, std::remove_pointer_t<int* const>> == true &&
std::is_same_v<int, std::remove_pointer_t<int* volatile>> == true &&
std::is_same_v<int, std::remove_pointer_t<int* const volatile>> == true
);
int main() {}|
(C++11) | checks if a type is a pointer type (class template) |
|
(C++11) | adds a pointer to the given type (class template) |
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https://en.cppreference.com/w/cpp/types/remove_pointer