std::chrono::operator==,<=>(std::chrono::year_month)

Since C++20

Header: <chrono>

Compares the two year_month values x and y.

# Declarations

constexpr bool operator==( const std::chrono::year_month& x,
const std::chrono::year_month& y ) noexcept;

(since C++20)

constexpr std::strong_ordering operator<=>( const std::chrono::year_month& x,
const std::chrono::year_month& y ) noexcept;

(since C++20)

# Example

#include <chrono>
#include <iostream>
 
int main()
{
    using namespace std::chrono;
 
    constexpr year_month ym1{year(2021), month(7)};
    constexpr year_month ym2{year(2021)/7};
    static_assert(ym1 == ym2);
    std::cout << ym1 << '\n';
 
    static_assert((2020y/1 < 2020y/2) && (2020y/2 == 2020y/2) && (2020y/3 <= 2021y/3) &&
                  (2023y/1 > 2020y/2) && (3020y/2 != 2020y/2) && (2020y/3 >= 2020y/3));
}