NAME¶

std::chrono::duration::operator++, - std::chrono::duration::operator++,

Synopsis¶

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¶

operator+=
operator-= implements compound assignment between two durations
operator*= (public member function)
operator/=
operator%=
operator+
operator-
operator* implements arithmetic operations with durations as arguments
operator/ (function template)
operator%
(C++11)