std::array<T,N>::empty

Since C++11

Checks if the container has no elements, i.e. whether begin() == end().

# Declarations

constexpr bool empty() const noexcept;

(since C++11)

# Return value

true if the container is empty, false otherwise.

# Example

#include <array>
#include <iostream>
 
int main()
{
    std::array<int, 4> numbers{3, 1, 4, 1};
    std::array<int, 0> no_numbers;
 
    std::cout << std::boolalpha;
    std::cout << "numbers.empty(): " << numbers.empty() << '\n';
    std::cout << "no_numbers.empty(): " << no_numbers.empty() << '\n';
}

# See also