gobyexample-time

来源：https://github.com/xg-wang/gobyexample/tree/master/examples

package main

import (
    "fmt"
    "time"
)

func main() {
    p := fmt.Println

    //得到当前时间
    now := time.Now()
    p(now)

    //通过提供年月日等信息，你可以构建一个`time`。时间总是关联着位置信息，例如时区
    then := time.Date(2009, 11, 17, 20, 34, 58, 651387237, time.UTC)
    p(then)

    //可以提取出时间的各个组成部分
    p(then.Year())
    p(then.Month())
    p(then.Day())
    p(then.Hour())
    p(then.Minute())
    p(then.Second())
    p(then.Nanosecond())
    p(then.Location())

    //输出是星期一到日的`Weekday`也是支持的
    p(then.Weekday())

    //这些方法来比较两个时间，分别测试一下是否是之前，之后或者是同一时刻，精确到秒
    p(then.Before(now))
    p(then.After(now))
    p(then.Equal(now))

    //方法`Sub`返回一个`Duration`来表示两个时间点的间隔时间
    diff := now.Sub(then)
    p(diff)

    //计算出不同单位下的时间长度值
    p(diff.Hours())
    p(diff.Minutes())
    p(diff.Seconds())
    p(diff.Nanoseconds())

    //你可以使用`Add` 将时间后移一个时间间隔，或者使用一个`-`来将时间前移一个时间间隔
    p(then.Add(diff))
    p(then.Add(-diff))

}

输出结果：

2018-11-01 10:36:57.7641798 +0800 CST m=+0.006014801
2009-11-17 20:34:58.651387237 +0000 UTC
2009
November
17
20
34
58
651387237
UTC
Tuesday
true
false
false
78486h1m59.112792563s
78486.03308688682
4.709161985213209e+06
2.8254971911279255e+08
282549719112792563
2018-11-01 02:36:57.7641798 +0000 UTC
2000-12-04 14:32:59.538594674 +0000 UTC