std::chrono::time_point
From cppreference.com
Defined in header
<chrono>
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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.
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[edit] Member types
Member type | Definition |
clock
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Clock , the clock on which this time point is measured
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duration
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Duration , a std::chrono::duration type used to measure the time since epoch
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rep
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Rep , an arithmetic type representing the number of ticks of the duration
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period
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Period , a std::ratio type representing the tick period of the duration
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[edit] Member functions
constructs a new time point (public member function) |
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returns the time point as duration since the start of its clock (public member function) |
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modifies the time point by the given duration (public member function) |
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[static]
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returns the time point corresponding to the smallest duration (public static member function) |
[static]
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returns the time point corresponding to the largest duration (public static member function) |
[edit] Non-member functions
specializes the std::common_type trait (class template specialization) |
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modifies the time point by the given duration (function template) |
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compares two time points (function template) |
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converts a time point to another time point on the same clock, with a different duration (function template) |
[edit] 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.
[edit] See also
(C++11)
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a time interval (class template) |