duration& operator+=(const duration& d); | (1) | |
duration& operator-=(const duration& d); | (2) | |
duration& operator*=(const rep& rhs); | (3) | |
duration& operator/=(const rep& rhs); | (4) | |
duration& operator%=(const rep& rhs); | (5) | |
duration& operator%=(const duration& rhs); | (6) |
Performs compound assignments between two durations with the same period or between a duration and a tick count value.
If rep_ is the member variable holding the number of ticks in this duration object,
1) Equivalent to
rep_ += d.count(); return *this; 2) Equivalent to
rep_ -= d.count(); return *this; 3) Equivalent to
rep_ *= rhs; return *this; 4) Equivalent to
rep_ /= rhs; return *this; 5) Equivalent to
rep_ %= rhs; return *this; 6) Equivalent to
rep_ %= d.count(); return *this; Parameters
| d | - | duration on the right-hand side of the operator |
| rhs | - | number of ticks on the right-hand side of the operator |
Return value
A reference to this duration after modification.
Example
#include <chrono>
#include <iostream>
int main()
{
std::chrono::minutes m(11);
m *= 2;
m += std::chrono::hours(10); // hours implicitly convert to minutes
std::cout << m.count() << " minutes equals "
<< std::chrono::duration_cast<std::chrono::hours>(m).count()
<< " hours and ";
m %= std::chrono::hours(1);
std::cout << m.count() << " minutes\n";
}Output:
622 minutes equals 10 hours and 22 minutes
See also
| increments or decrements the tick count (public member function) | |
| implements arithmetic operations with durations as arguments (function template) |
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