(1) | ||
constexpr duration operator+() const; | (until C++17) | |
constexpr std::common_type_t<duration> operator+() const; | (since C++17) | |
(2) | ||
constexpr duration operator-() const; | (until C++17) | |
constexpr std::common_type_t<duration> operator-() const; | (since C++17) |
Implements unary plus and unary minus for the durations.
If rep_
is a member variable holding the number of ticks in a duration object, and D
is the return type,
return D(*this);
return D(-rep_);
(none).
#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
increments or decrements the tick count (public member function) |
|
implements arithmetic operations with durations as arguments (function template) |
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