std::chrono::duration<Rep,Period>::count
constexpr rep count() const; |
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返回此 duration 的计次数。
参数
(无)
返回值
此 duration 的计次数。
示例
运行此代码
#include <chrono> #include <iostream> int main() { std::chrono::milliseconds ms{3}; // 3 毫秒 // 从 3 毫秒构造 6000 微秒 std::chrono::microseconds us = 2*ms; // 使用分数计次的 30Hz 时钟 std::chrono::duration<double, std::ratio<1, 30>> hz30(3.5); std::cout << "3 ms duration has " << ms.count() << " ticks\n" << "6000 us duration has " << us.count() << " ticks\n" << "3.5 30Hz duration has " << hz30.count() << " ticks\n"; }
输出:
3 ms duration has 3 ticks 6000 us duration has 6000 ticks 3.5 30Hz duration has 3.5 ticks
参阅
转换时长到另一个拥有不同嘀嗒间隔的时长 (函数模板) |