std::is_bounded_array

Since C++20

Header: <type_traits>

std::is_bounded_array is a UnaryTypeTrait.

# Declarations

template< class T >
struct is_bounded_array;

(since C++20)

# Notes

Feature-test macro Value Std Feature __cpp_lib_bounded_array_traits 201902L (C++20) std::is_bounded_array, std::is_unbounded_array

# Example

#include <iostream>
#include <type_traits>
 
#define OUT(...) std::cout << #__VA_ARGS__ << " : " << __VA_ARGS__ << '\n'
 
class A {};
 
int main()
{
    std::cout << std::boolalpha;
    OUT(std::is_bounded_array_v<A>);
    OUT(std::is_bounded_array_v<A[]>);
    OUT(std::is_bounded_array_v<A[3]>);
    OUT(std::is_bounded_array_v<float>);
    OUT(std::is_bounded_array_v<int>);
    OUT(std::is_bounded_array_v<int[]>);
    OUT(std::is_bounded_array_v<int[3]>);
}

# See also