std::chrono::operator==,<=>(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== respectively.
Return value
1)
int(x) == int(y)
2)
int(x) <=> int(y)
Example
#include <iostream>
#include <chrono>
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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https://en.cppreference.com/w/cpp/chrono/year/operator_cmp
