std::chrono::day::operator+=, std::chrono::day::operator-=

constexpr std::chrono::day& operator+=(const std::chrono::days& d) noexcept;
(1) (since C++20)
constexpr std::chrono::day& operator-=(const std::chrono::days& d) noexcept;
(2) (since C++20)

Adds or subtracts d.count() days from the day value.

1) Equivalent to *this = *this + d;
2) Equivalent to *this = *this - d;

Return value

A reference to this day after modification.


If the result would be outside the range [0, 255], the actual stored value is unspecified.


See also

increments or decrements the day
(public member function)
adds or subtracts a number of days and a day, or find the difference between two days

© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.