std::chrono::month::operator+=, std::chrono::month::operator-=
constexpr std::chrono::month& operator+=(const std::chrono::months& m) noexcept; | (1) | (since C++20) |
constexpr std::chrono::month& operator+=(const std::chrono::months& m) noexcept; | (2) | (since C++20) |
Adds or subtracts m.count()
from the month value, reducing the result modulo 12 to an integer in the range [1, 12].
1) Performs
*this = *this + m;
2) Performs
*this = *this - m;
Return value
A reference to this month
after modification.
Notes
After a call to one of these functions, ok()
is always true if no overflow occurred during the operation.
Example
See also
increments or decrements the month (public member function) |
|
performs arithmetic on month s (function) |
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