char**argv){{Print(nanoseconds);Print(microseconds);Print(milliseconds);Print(seconds);Print(minutes);Print(hours);Print(days);Print(weeks);Print(months);Print(years
std::chrono::secondstime_to_live,std::chrono::secondsinitial_visibility_timeout, web::http::uri_builder uri_builder,conststd::chrono::seconds& timeout, operation_context context){if(time_to_live.count() >=0LL && time_to_live.count() !=604800LL)...
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例如,std::chrono::seconds表示以秒为单位的时间段,而std::chrono::milliseconds和std::chrono::microseconds分别表示毫秒和微秒。 #include <chrono> // 1秒的持续时间 std::chrono::seconds one_second(1); // 100毫秒的持续时间 std::chrono::milliseconds hundred_milliseconds(100); // 1000微秒(即1毫秒)...
if (sec == std::chrono::duration_cast<std::chrono::seconds>(msec)) {// ...} 使用duration_cast可以确保两个持续时间在进行比较时单位一致。 5.2 正确使用std::chrono以避免错误(Correct Usage of std::chrono to Avoid Errors) 正确使用std::chrono不仅关乎避免编译错误,还涉及到写出易于理解和维护的代...
1voidfun()2{3cout<<”hello word”<<endl;4}5intmain()6{7timer t;//开始计时8fun()9cout<<t.elapsed()<<endl;//打印fun函数耗时多少毫秒10cout<<t.elapsed_micro ()<<endl;//打印微秒11cout<<t.elapsed_nano ()<<endl;//打印纳秒12cout<<t.elapsed_seconds()<<endl;//打印秒13cout<<t....
> seconds; /// minutes typedef duration<int64_t, ratio< 60>> minutes; 这里的nano、micro、milli即std::nano,std::micro,std::milli类型。 类型的声明如下:typedef ratio<1, 1000000000> nano; typedef ratio<1, 1000000> micro; typedef ratio<1, 1000> milli; ratio第一个模板参数num(分子),第二...
Leap seconds can be represented, but Chrono does not fully support them. See Leap Second Handling. Crate features Default features: alloc: Enable features that depend on allocation (primarily string formatting). std: Enables functionality that depends on the standard library. This is a superset of...
voidMySleep(int nSec,int nMillSec){std::chrono::secondssecs(nSec);std::chrono::millisecondsmills(nMillSec);std::this_thread::sleep_for(secs+mills);} duration_cast 使用duration_cast可以方便的在不同时间单位间进行转换,如: 代码语言:javascript ...
秒:std::chrono::seconds duration<Rep/ 至少 35 位的有符号整数类型 /> 分钟:std::chrono::minutes duration<Rep/ 至少 29 位的有符号整数类型 /, std::ratio<60>> 小时:std::chrono::hours duration<Rep/ 至少 23 位的有符号整数类型 /, std::ratio<3600>> 注意:到 hours 为止的每个预定义时长类...