operator==,!=,<,<=,>,>=(std::chrono::duration)
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| template <class Rep1, class Period1, class Rep2, class Period2> constexpr bool operator==(const duration<Rep1, Period1>& lhs, |
(1) | |
| template <class Rep1, class Period1, class Rep2, class Period2> constexpr bool operator!=(const duration<Rep1, Period1>& lhs, |
(2) | |
| template <class Rep1, class Period1, class Rep2, class Period2> constexpr bool operator<(const duration<Rep1, Period1>& lhs, |
(3) | |
| template <class Rep1, class Period1, class Rep2, class Period2> constexpr bool operator<=(const duration<Rep1, Period1>& lhs, |
(4) | |
| template <class Rep1, class Period1, class Rep2, class Period2> constexpr bool operator>(const duration<Rep1, Period1>& lhs, |
(5) | |
| template <class Rep1, class Period1, class Rep2, class Period2> constexpr bool operator>=(const duration<Rep1, Period1>& lhs, |
(6) | |
Compares two durations.
1-2) Checks if lhs and rhs are equal, i.e. the number of ticks for the type common to both durations are equal.
3-6) Compares lhs to rhs, i.e. compares the number of ticks for the type common to both durations.
[Bearbeiten] Parameter
| lhs | - | Dauer auf der linken Seite des Fahrers
Original: duration on the left-hand side of the operator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| rhs | - | Dauer auf der rechten Seite des Fahrers
Original: duration on the right-hand side of the operator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[Bearbeiten] Rückgabewert
Assuming that CT =
std::common_type<std::chrono::duration<Rep1, Period1>,
std::chrono::duration<Rep2, Period2>>::type, then:
1) CT(lhs).count() == CT(rhs).count()
2) !(lhs == rhs)
3) CT(lhs).count() < CT(rhs).count()
4) !(rhs < lhs)
5) rhs < lhs
6) !(lhs < rhs)
[Bearbeiten] Beispiel
#include <chrono> #include <iostream> int main() { if(std::chrono::seconds(2) == std::chrono::milliseconds(2000)) std::cout << "2 s == 2000 ms\n"; else std::cout << "2 s != 2000 ms\n"; if(std::chrono::seconds(61) > std::chrono::minutes(1)) std::cout << "61 s > 1 min\n"; else std::cout << "61 s <= 1 min\n"; }
Output:
2 s == 2000 ms 61 s > 1 min
