std::chrono::year_month_weekday_last::operator+=, std::chrono::year_month_weekday_last::operator-=
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(1) | (since C++20) |
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(2) | (since C++20) |
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(3) | (since C++20) |
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(4) | (since C++20) |
Modifies the time point *this represents by the duration dy or dm.
1) Equivalent to
*this = *this + dy;.
2) Equivalent to
*this = *this + dm;.
3) Equivalent to
*this = *this - dy;.
4) Equivalent to
*this = *this - dm;.
For durations that are convertible to both std::chrono::years and std::chrono::months, the years overloads (1,3) are preferred if the call would otherwise be ambiguous.
Example
#include <chrono>
#include <iostream>
using namespace std::chrono;
int main()
{
auto ymwdl{August/Friday[last]/2022};
std::cout << year_month_day{ymwdl} << '\n';
ymwdl += months(2);
std::cout << year_month_day{ymwdl} << '\n';
ymwdl -= years(1);
std::cout << year_month_day{ymwdl} << '\n';
}Output:
2022-08-26
2022-10-28
2021-10-29See also
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(C++20)
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adds or subtracts a year_month_weekday_last and some number of years or months (function) |
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