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

From cppreference.com
< cpp‎ | chrono‎ | month day
C++
Date and time library
Time point
(C++11)
(C++20)
Duration
(C++11)
Clocks
(C++11)
(C++11)
(C++20)
(C++20)
(C++20)
(C++11)
(C++20)
(C++20)
(C++20)
Time of day
(C++20)(C++20)
(C++20)(C++20)
(C++20)

Calendar
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)(C++20)
Time zone
(C++20)
(C++20)
(C++20) (C++20) (C++20) (C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
chrono I/O
(C++20)
C-style date and time
std::chrono::month_day
Defined in header <chrono>
constexpr bool operator== ( const std::chrono::month_day & x,
const std::chrono::month_day & y ) noexcept ;
(1) (since C++20)
constexpr std::strong_ordering operator<=> ( const std::chrono::month_day & x,
const std::chrono::month_day & y ) noexcept ;
(2) (since C++20)

Compares two month_day values.

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

Return value

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

Example

Run this code
#include <chrono>
#include <iostream>
 
int main()
{
    constexpr auto md1{std::chrono::August/15};
    constexpr auto md2{std::chrono::month(8)/std::chrono::day(15)};
    std::cout << std::boolalpha << (md1 == md2) << '\n';
 
    static_assert(md1 <= md2);
}

Output: 

true
Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/chrono/month_day/operator_cmp&oldid=157108