golang convert timestamp

Golang is a very popular programming language. Its emergence has brought many conveniences to programmers, including many ways to deal with time. In Golang, converting time to timestamp (Timestamp) is a very common operation. This article will take you to learn in detail how to implement timestamp conversion in Golang.

1. Basic knowledge of timestamps

Before introducing how to implement timestamp conversion in Golang, you first need to understand the basic knowledge of timestamps.

Timestamp is a way for computers to store and process date and time. It is usually an integer that represents the time since January 1, 1970 00:00:00 UTC (Greenwich Mean Time) to the present The number of seconds of time.

The concept of timestamp first appeared in the operating system Unix, so it is also called Unix Timestamp. Languages ​​such as Java, Python, and PHP also have their own timestamp definitions and implementation methods.

2. Implementing timestamp conversion in Golang

After understanding the concept of timestamp, you can start to explain how to implement timestamp conversion in Golang.

1. Convert time to timestamp

In Golang, use the Unix() method provided by the time package to convert time to timestamp. The signature of the Unix() method is as follows:

func (t Time) Unix() int64

Among them, Time represents the time type in Golang, and int64 represents the returned timestamp type. To convert a time to a timestamp, you only need to follow the following code:

package main

import (
    "fmt"
    "time"
)

func main() {
    now := time.Now() // 获取当前时间
    timestamp := now.Unix()
    fmt.Println(timestamp)
}

2. Convert a timestamp to a time

In addition to converting a time to a timestamp, We also sometimes need to convert timestamp to time. In Golang, the timestamp can be converted into time using the Unix() method provided by the time package. The specific steps are to pass the timestamp as a parameter into the time.Unix() method. The signature of the Unix() method is as follows:

func Unix(sec int64, nsec int64) Time

where sec represents the number of seconds in the timestamp, and nsec represents the number of nanoseconds in the timestamp. To convert the timestamp to time, you only need to follow the following code:

package main

import (
    "fmt"
    "time"
)

func main() {
    timestamp := 1634699043
    t := time.Unix(int64(timestamp), 0)
    
    fmt.Println(t)
}

The output result is: 2021-10-20 21:17:23 0800 CST

3. Summary

The above is how to implement timestamp conversion in Golang. By using the Unix() method provided by the time package, we can easily convert time to timestamp, and converting timestamp to time is equally convenient. In practical applications, we often use timestamps, so mastering this technique is very helpful to our development work.

In the process of using timestamps, it should be noted that different programming languages ​​may have some detailed differences in the implementation of timestamps, so selection needs to be made based on actual conditions in different scenarios. Finally, I hope this article can be helpful to everyone's Golang development work.

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