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

From cppreference.com
< cpp‎ | chrono‎ | year month

constexpr bool operator==(const std::chrono::year_month& x, const std::chrono::year_month& y) noexcept; | (1) | (since C++20)
constexpr bool operator!=(const std::chrono::year_month& x, const std::chrono::year_month& y) noexcept; | (2) | (since C++20)
constexpr bool operator< (const std::chrono::year_month& x, const std::chrono::year_month& y) noexcept; | (3) | (since C++20)
constexpr bool operator> (const std::chrono::year_month& x, const std::chrono::year_month& y) noexcept; | (4) | (since C++20)
constexpr bool operator<=(const std::chrono::year_month& x, const std::chrono::year_month& y) noexcept; | (5) | (since C++20)
constexpr bool operator>=(const std::chrono::year_month& x, const std::chrono::year_month& y) noexcept; | (6) | (since C++20)

Compares the two `year_month` objects `x` and `y`.

### Return value

1) x.year() == y.year() && x.month() == y.month()
2) !(x == y)
3) x.year() < y.year() || (x.year() == y.year() && x.month() < y.month())
4) y < x
5) !(y < x)
6) !(x < y)
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