Golang教程-Go时间

Go时间

Go语言对时间操作有很好的支持。Unix纪元时间被用作时间操作的参考。

我们可以使用时间包中提供的Date方法来构建一个时间对象。该包包含了一些方法，如year()、month()、day()、location()等。

我们可以通过时间对象来调用这些方法。

Go时间示例

package main

import (
    "fmt"
    "time"
)

func main() {
    p := fmt.Println

    present := time.Now() // 当前时间
    p(present)

    DOB := time.Date(1993, 02, 28, 9, 04, 39, 213, time.Local)
    fmt.Println(DOB)

    fmt.Println(DOB.Year())
    fmt.Println(DOB.Month())
    fmt.Println(DOB.Day())
    fmt.Println(DOB.Hour())
    fmt.Println(DOB.Minute())
    fmt.Println(DOB.Second())
    fmt.Println(DOB.Nanosecond())
    fmt.Println(DOB.Location())

    fmt.Println(DOB.Weekday())

    fmt.Println(DOB.Before(present))
    fmt.Println(DOB.After(present))
    fmt.Println(DOB.Equal(present))

    diff := present.Sub(DOB)
    fmt.Println(diff)
    fmt.Println(diff.Hours())
    fmt.Println(diff.Minutes())
    fmt.Println(diff.Seconds())
    fmt.Println(diff.Nanoseconds())
    fmt.Println(DOB.Add(diff))
    fmt.Println(DOB.Add(-diff))
}

输出：

2017-10-04 17:10:13.474931994 +0530 IST m=+0.000334969
1993-02-28 09:04:39.000000213 +0530 IST
1993
February
28
9
4
39
213
Local
Sunday
true
false
false
215624h5m34.474931781s
215624.09290970326
1.2937445574582197e+07
7.762467344749318e+08
776246734474931781
2017-10-04 17:10:13.474931994 +0530 IST
1968-07-25 00:59:04.525068432 +0530 IST

Process finished with exit code 0

Go时间示例2

package main

import (
    "fmt"
    "time"
)

func main() {
    present := time.Now()
    fmt.Println("Today : ", present.Format("Mon, Jan 2, 2006 at 3:04pm"))
    someTime := time.Date(2017, time.March, 30, 11, 30, 55, 123456, time.Local)
    // 使用time.Equal()比较时间
    sameTime := someTime.Equal(present)
    fmt.Println("someTime equals to now ? : ", sameTime)
    // 计算今天与很久以前的时间差
    diff := present.Sub(someTime)
    // 将差值转换为天数
    days := int(diff.Hours() / 24)
    fmt.Printf("30th March 2017 was %d days ago \n", days)
}

输出：

Today :  Wed, Oct 4, 2017 at 5:15pm
someTime equals to now ? :  false
30th March 2017 was 188 days ago