点击查看代码,可修改milli配置输出时间级别，当前毫秒级
auto begin = std::chrono::steady_clock::now();
fun();
auto end = std::chrono::steady_clock::now();
std::cout<<"fun need:"<<std::chrono::duration<double, std::milli>(end - begin).count()<<std::endl;
点击查看代码,可修改milli配置输出时间级别，当前毫秒级
auto begin = std::chrono::steady_clock::now();
fun();
auto end = std::chrono::steady_clock::now();
std::cout<<"fun need:"<<std::chrono::duration<double, std::milli>(end - begin).count()<<std::endl;