std::chrono::day::operator+=, std::chrono::day::operator-=
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std::chrono::day
Member functions
day::operator+=day::operator-=
Nonmember functions
Helper classes
(C++26)
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;.
Contents
[edit] Return value
A reference to this day after modification.
[edit] Notes
If the result would be outside the range [0, 255], the actual stored value is unspecified.
[edit] Example
Run this code
#include <cassert> #include <chrono> int main() { std::chrono::day d{15}; d += std::chrono::days (2); assert (d == std::chrono::day (17)); d -= std::chrono::days {3}; assert (d == std::chrono::day (14)); }
[edit] See also
(C++20)
day, or find the difference between two days (function) [edit]