std::chrono::duration<Rep,Period>::operator++, std::chrono::duration<Rep,Period>::operator--
From cppreference.com
duration& operator++();
|
(1) | (since C++11) (constexpr since C++17) |
duration operator++( int );
|
(2) | (since C++11) (constexpr since C++17) |
duration& operator--();
|
(3) | (since C++11) (constexpr since C++17) |
duration operator--( int );
|
(4) | (since C++11) (constexpr since C++17) |
Increments or decrements the number of ticks for this duration.
If rep_ is a member variable holding the number of ticks in a duration object,
1) Equivalent to
++rep_; return *this;.2) Equivalent to
return duration(rep_++).3) Equivalent to
--rep_; return *this;.4) Equivalent to
return duration(rep_--);.Parameters
(none)
Return value
1,3) A reference to this duration after modification.
2,4) A copy of the duration made before modification.
Example
Run this code
#include <chrono>
#include <iostream>
int main()
{
std::chrono::hours h(1);
std::chrono::minutes m = ++h;
m--;
std::cout << m.count() << " minutes\n";
}
Output:
119 minutes
See also
| implements compound assignment between two durations (public member function) | |
| implements arithmetic operations with durations as arguments (function template) |