W3cubDocs

/C++

std::chrono::duration::operator+(unary), std::chrono::duration::operator-(unary)

constexpr duration operator+() const;	(1)
constexpr duration operator-() const;	(2)

Implements unary plus and unary minus for the durations.

If rep_ is a member variable holding the number of ticks in a duration object,

1) Equivalent to return *this;

2) Equivalent to return duration(-rep_);

Parameters

(none).

Return value

1) a copy of this duration object

2) a copy of this duration object, with the number of ticks negated

Example

#include <chrono>
#include <iostream>
 
int main()
{
    std::chrono::seconds s1(10);
    std::chrono::seconds s2 = -s1;
 
    std::cout << "negated 10 seconds are " << s2.count() << " seconds\n";
}

Output:

negated 10 seconds are -10 seconds

operator++operator++(int)operator--operator--(int)	increments or decrements the tick count (public member function)
operator+operator-operator*operator/operator%	implements arithmetic operations with durations as arguments (function template)

std::chrono::duration::operator+(unary), std::chrono::duration::operator-(unary)

Parameters

Return value

Example

See also