c++ - 如何使用此库将秒数转换为分钟数？

Question

我有一个 program使用这个流行的 library ，但是我很难用它来将秒数转换为分钟数

下面的代码...

#include <iostream>

#include "units.h"

int main(int argc, const char * argv[])
{
    {
        long double one = 1.0;

        units::time::second_t seconds;
        units::time::minute_t minutes(one);

        seconds = minutes;

        std::cout << "1 minute is " << seconds << std::endl;
    }


    {
        long double one = 1.0;

        units::time::second_t seconds(one);
        units::time::minute_t minutes;

        minutes = seconds;

        std::cout << "1 second is " << minutes << std::endl;
    }

    return 0;
}

产生...

1 minute is 60 s
1 second is 1 s

然而，我本以为它会产生……

1 minute is 60 s
1 second is .016666667 m

Answer 1

库提供了一个units::convert方法，查看文档here .

这是一个工作片段:

    long double one = 1.0;

    units::time::second_t seconds(one);
    units::time::minute_t minutes;

    minutes = seconds;

    std::cout << "1 second is " << minutes << std::endl;
    std::cout << "1 second is "
              << units::convert<units::time::seconds, units::time::minutes>(seconds)
              << std::endl;

有关更多信息，我建议在 doc 中搜索.