Go时间

本文概述

• Go时间示例
• Go时间示例2

Go对时间操作有很好的支持。 Unix纪元时间用作时间操纵的参考。

我们可以使用时间包中提供的Date方法来构建时间对象。该软件包包含诸如year(), month(), day(), location()等方法。

我们通过使用时间对象来调用这些方法。

Go时间示例

package main

import "fmt"
import "time"

func main() {
	p := fmt.Println

	present := time.Now()// current time
	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)
	// compare time with time.Equal()
	sameTime := someTime.Equal(present)
	fmt.Println("someTime equals to now ? : ", sameTime)
	// calculate the time different between today
	// and long time ago
	diff := present.Sub(someTime)
	// convert diff to days
	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