How to do time increment operation in Golang

Golang is a rapidly growing programming language. Its simplicity, ease of use and efficient running speed have attracted more and more developers to use it. In Golang, time-related operations are essential, and this article will focus on how to perform time increase operations in Golang.

1. Overview of time

In Golang's time package, time is expressed using the time.Time structure, which includes year, month, day, hour, minute, second and Time elements such as nanoseconds. At the same time, there are many functions that can manipulate time in this package, so that we can increase time.

2. Time increase method

In Golang, the time is increased in different units such as year, month, day, hour, minute, second and so on. Different time increasing methods will be introduced below.

1. Add year

To add a year, you can use the AddDate method. The prototype of this method is as follows:

func (t Time) AddDate(years int, months int, days int) Time

Among them, years represents the number of years to add, months Indicates the number of months added, and days indicates the number of days added. The following is a specific example:

package main

import (
  "fmt"
  "time"
)

func main() {
  t := time.Now()
  fmt.Println("添加1年后的时间:", t.AddDate(1, 0, 0))
  fmt.Println("添加1年1个月后的时间:", t.AddDate(1, 1, 0))
  fmt.Println("添加2年2个月3天后的时间:", t.AddDate(2, 2, 3))
}

The output result is as follows:

添加1年后的时间: 2021-06-05 19:41:52.4936932 +0800 CST m=+315.743666501
添加1年1个月后的时间: 2021-07-05 19:41:52.4936932 +0800 CST m=+345.743666501
添加2年2个月3天后的时间: 2023-08-08 19:41:52.4936932 +0800 CST m=+805.743666501

2. Add the month

To add the month, you can use the AddDate method, the definition of this method As mentioned above. The following is a specific example:

package main

import (
  "fmt"
  "time"
)

func main() {
  t := time.Now()
  fmt.Println("添加2个月后的时间:", t.AddDate(0, 2, 0))
  fmt.Println("添加4个月5天后的时间:", t.AddDate(0, 4, 5))
}

The output result is as follows:

添加2个月后的时间: 2021-08-05 19:41:52.4936932 +0800 CST m=+798.743666501
添加4个月5天后的时间: 2021-10-10 19:41:52.4936932 +0800 CST m=+849.743666501

3. Increase the number of days

To increase the number of days, you can use the Add method, the prototype of this method As follows:

func (t Time) Add(d Duration) Time

Among them, d represents the increased time period. The following is a specific example:

package main

import (
  "fmt"
  "time"
)

func main() {
  t := time.Now()
  fmt.Println("添加2天后的时间:", t.Add(48*time.Hour))
  fmt.Println("添加3小时后的时间:", t.Add(3*time.Hour))
}

The output results are as follows:

添加2天后的时间: 2021-06-07 19:41:52.4936932 +0800 CST m=+558.743666501
添加3小时后的时间: 2021-06-06 22:41:52.4936932 +0800 CST

4. Increase the number of hours and minutes

Same as increasing the number of hours and minutes You can use the Add method, as shown below:

package main

import (
  "fmt"
  "time"
)

func main() {
  t := time.Now()
  fmt.Println("添加2小时后的时间:", t.Add(2*time.Hour))
  fmt.Println("添加30分钟后的时间:", t.Add(30*time.Minute))
}

The output result is as follows:

添加2小时后的时间: 2021-06-05 21:41:52.4936932 +0800 CST
添加30分钟后的时间: 2021-06-05 20:11:52.4936932 +0800 CST

5. Increase the number of seconds

To increase the number of seconds, you can use the Add method, As shown below:

package main

import (
  "fmt"
  "time"
)

func main() {
  t := time.Now()
  fmt.Println("添加20秒后的时间:", t.Add(20*time.Second))
  fmt.Println("添加120秒后的时间:", t.Add(120*time.Second))
}

The output result is as follows:

添加20秒后的时间: 2021-06-05 19:42:12.4936932 +0800 CST
添加120秒后的时间: 2021-06-05 19:43:52.4936932 +0800 CST

3. Summary

The time increase operation is one of the methods often used in development. Through the introduction of this article , we can see that in Golang, the time increases from different units such as years, months, days, hours, minutes, seconds, etc. At the same time, you can use the AddDate and Add methods to complete method operations on time. I hope this article can be helpful to everyone.

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