NAME¶

std::chrono::operator==,(std::chrono::year_month) - std::chrono::operator==,(std::chrono::year_month)

Synopsis¶

Defined in header <chrono>
constexpr bool operator==( const std::chrono::year_month& x,
const std::chrono::year_month& y ) (1) (since C++20)
noexcept;
constexpr std::strong_ordering operator<=>( const
std::chrono::year_month& x, (2) (since C++20)
const
std::chrono::year_month& y ) noexcept;

Compares the two year_month values x and y.

The <, <=, >, >=, and != operators are synthesized from operator<=> and operator==
respectively.

Return value¶

1) x.year() == y.year() && x.month() == y.month()
2) x.year() <=> y.year() != 0 ? x.year() <=> y.year() : x.month() <=> y.month()

Example¶

// Run this code

#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));
}

Output:¶

2021/Jul