std::chrono::operator==,<=>(std::chrono::year_month)
< cpp | chrono | year month
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constexpr bool operator==( const std::chrono::year_month& x,
const std::chrono::year_month& y ) noexcept; |
(1) | (C++20 起) |
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constexpr std::strong_ordering operator<=>( const std::chrono::year_month& x,
const std::chrono::year_month& y ) noexcept; |
(2) | (C++20 起) |
比较二个 year_month 对象 x 与 y 。
返回值
1) x.year() == y.year() && x.month() == y.month()
2) x.year() <=> y.year() != 0 ? x.year() <=> y.year() : x.month() <=> y.month()