Go时间日期实例


Go编程为时间和持续时间提供广泛的支持; 这里有些例子。我们将从获取当前时间开始。也可以通过提供年,月,日等来构建时间结构。时间总是与位置(即时区)相关联。

具体的每个函数,可参考示例中的代码 -

所有的示例代码,都放在 F:\worksp\golang 目录下。安装Go编程环境请参考:http://www.yiibai.com/go/go_environment.html

json.go的完整代码如下所示 -

package main

import "fmt"
import "time"

func main() {
    p := fmt.Println

    // We'll start by getting the current time.
    now := time.Now()
    p(now)

    // You can build a `time` struct by providing the
    // year, month, day, etc. Times are always associated
    // with a `Location`, i.e. time zone.
    then := time.Date(
        2009, 11, 17, 20, 34, 58, 651387237, time.UTC)
    p(then)

    // You can extract the various components of the time
    // value as expected.
    p(then.Year())
    p(then.Month())
    p(then.Day())
    p(then.Hour())
    p(then.Minute())
    p(then.Second())
    p(then.Nanosecond())
    p(then.Location())

    // The Monday-Sunday `Weekday` is also available.
    p(then.Weekday())

    // These methods compare two times, testing if the
    // first occurs before, after, or at the same time
    // as the second, respectively.
    p(then.Before(now))
    p(then.After(now))
    p(then.Equal(now))

    // The `Sub` methods returns a `Duration` representing
    // the interval between two times.
    diff := now.Sub(then)
    p(diff)

    // We can compute the length of the duration in
    // various units.
    p(diff.Hours())
    p(diff.Minutes())
    p(diff.Seconds())
    p(diff.Nanoseconds())

    // You can use `Add` to advance a time by a given
    // duration, or with a `-` to move backwards by a
    // duration.
    p(then.Add(diff))
    p(then.Add(-diff))
}

执行上面代码,将得到以下输出结果 -

F:\worksp\golang>go run time.go
2017-01-21 16:59:10.8307711 +0800 CST
2009-11-17 20:34:58.651387237 +0000 UTC
2009
November
17
20
34
58
651387237
UTC
Tuesday
true
false
false
62916h24m12.179383863s
62916.403383162185
3.774984202989731e+06
2.2649905217938387e+08
226499052179383863
2017-01-21 08:59:10.8307711 +0000 UTC
2002-09-14 08:10:46.472003374 +0000 UTC

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