NAME¶

std::chrono::year::operator+,std::chrono::year::operator- - std::chrono::year::operator+,std::chrono::year::operator-

Synopsis¶

constexpr std::chrono::year operator+() noexcept; (1) (since C++20)
constexpr std::chrono::year operator-() noexcept; (2) (since C++20)

Applies the unary operators to the year value.

1) Returns a copy of *this.
2) Returns a year whose year value is the negation of that of *this.

Return value¶

1) *this
2) std::chrono::year(-int(*this))

Example¶

// Run this code

#include <chrono>
#include <iostream>

int main()
{
constexpr std::chrono::year y{2020};
constexpr auto ny = -y;
std::cout << "The year " << (int)y << " negated is " << (int)ny << '\n';
}

Output:¶

The year 2020 negated is -2020