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

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< cpp‎ | chrono‎ | year
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C-style date and time
std::chrono::year
Defined in header <chrono>
constexpr bool operator== ( const std::chrono::year & x,
const std::chrono::year & y ) noexcept ;
(1) (since C++20)
constexpr std::strong_ordering operator<=> ( const std::chrono::year & x,
const std::chrono::year & y ) noexcept ;
(2) (since C++20)

Compare the two std::chrono::year x and y.

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

Return value

1) int(x) == int(y)
2) int(x) <=> int(y)

Example

Run this code
#include <chrono>
#include <iostream>
 
int main()
{
    using namespace std::chrono;
 
    constexpr year y1{2020};
    constexpr year y2{2021};
 
    std::cout << std::boolalpha << (y1 != y2) << '\n';
 
    static_assert((2020y < 2023y) && (2020y == 2020y) && (2020y <= 2023y) &&
                  (2023y > 2020y) && (2023y != 2020y) && (2023y >= 2020y));
}

Output: 

true
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