std::chrono::weekday::operator+=, std::chrono::weekday::operator-=
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constexpr std::chrono::weekday& operator+=(const std::chrono::days& d) noexcept; |
(1) | (since C++20) |
constexpr std::chrono::weekday& operator-=(const std::chrono::days& d) noexcept; |
(2) | (since C++20) |
Adds or subtracts d.count()
from the weekday value, reducing the result modulo 7 to an integer in the range [0, 6].
1) Performs *this = *this + d;
2) Performs *this = *this - d;
Contents |
[edit] Return value
A reference to this weekday
after modification.
[edit] Notes
After a call to one of these functions, ok() is always true if no overflow occurred during the operation.
[edit] Example
This section is incomplete Reason: no example |
[edit] See also
increments or decrements the weekday (public member function) | |
performs arithmetic on weekday s (function) |