std::chrono::time_point
From cppreference.com
| Defined in header <chrono>
|
||
| template< class Clock, |
(since C++11) | |
Class template std::chrono::time_point represents a point in time. It is implemented as if it stores a value of type Duration indicating the time interval from the start of the Clock's epoch.
Member types
| Member type | Definition |
clock
|
Clock, the clock on which this time point is measured
|
duration
|
Duration, a std::chrono::duration type used to measure the time since epoch
|
rep
|
Rep, an arithmetic type representing the number of ticks of the duration
|
period
|
Period, a std::ratio type representing the tick period of the duration
|
Member functions
| constructs a new time point (public member function) | |
| returns the time point as duration since the start of its clock (public member function) | |
| modifies the time point by the given duration (public member function) | |
| [static] |
returns the time point corresponding to the smallest duration (public static member function) |
| [static] |
returns the time point corresponding to the largest duration (public static member function) |
Non-member functions
| specializes the std::common_type trait (class template specialization) | |
| modifies the time point by the given duration (function template) | |
| compares two time points (function template) | |
| converts a time point to another time point on the same clock, with a different duration (function template) | |
| converts a time_point to another, rounding down (function template) | |
| converts a time_point to another, rounding up (function template) | |
| converts a time_point to another, rounding to nearest, ties to even (function template) |
Example
Run this code
#include <iostream> #include <iomanip> #include <ctime> #include <chrono> int main() { std::chrono::system_clock::time_point now = std::chrono::system_clock::now(); std::time_t now_c = std::chrono::system_clock::to_time_t(now - std::chrono::hours(24)); std::cout << "24 hours ago, the time was " << std::put_time(std::localtime(&now_c), "%F %T") << '\n'; std::chrono::steady_clock::time_point start = std::chrono::steady_clock::now(); std::cout << "Hello World\n"; std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now(); std::cout << "Printing took " << std::chrono::duration_cast<std::chrono::microseconds>(end - start).count() << "us.\n"; }
Possible output:
24 hours ago, the time was 2011-10-25 12:00:08 Hello World Printing took 84us.
See also
| (C++11) |
a time interval (class template) |