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std::remove_pointer(3) C++ Standard Libary std::remove_pointer(3) NAME std::remove_pointer - std::remove_pointer Synopsis Defined in header <type_traits> template< class T > (since C++11) struct remove_pointer; 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 re- move_pointer is undefined. Member types Name Definition type the type pointed to by T or T if it's not a pointer Helper types template< class T > (since C++14) using remove_pointer_t = typename remove_pointer<T>::type; Possible implementation template< class T > struct remove_pointer {type- def T type;}; template< class T > struct remove_pointer<T*> {type- def T type;}; template< class T > struct remove_pointer<T* const> {type- def T type;}; template< class T > struct remove_pointer<T* volatile> {type- def T type;}; template< class T > struct remove_pointer<T* const volatile> {type- def T type;}; Example // Run this code #include <iostream> #include <type_traits> template<class T1, class T2> void print_is_same() { std::cout << std::is_same<T1, T2>() << '\n'; } void print_separator() { std::cout << "-----\n"; } int main() { std::cout << std::boolalpha; print_is_same<int, int>(); // true print_is_same<int, int*>(); // false print_is_same<int, int**>(); // false print_separator(); print_is_same<int, std::remove_pointer<int>::type>(); // true print_is_same<int, std::remove_pointer<int*>::type>(); // true print_is_same<int, std::remove_pointer<int**>::type>(); // false print_separator(); print_is_same<int, std::remove_pointer<int* const>::type>(); // true print_is_same<int, std::remove_pointer<int* volatile>::type>(); // true print_is_same<int, std::remove_pointer<int* const volatile>::type>(); // true } Output: true false false ----- true true false ----- true true true See also is_pointer checks if a type is a pointer type (C++11) (class template) add_pointer adds a pointer to the given type (C++11) (class template) http://cppreference.com 2022.07.31 std::remove_pointer(3)
NAME | Synopsis | Member types | Helper types | Possible implementation | Example | Output: | See also
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