Let's talk about the installation and usage process of Golang

Golang is a popular programming language that was developed by Google and officially launched in 2009. Compared with other programming languages, Golang has many features similar to languages ​​such as C and Java, and also has its own unique features, such as concurrent programming and garbage collection. So, how to open Golang? This article will introduce you to the installation and usage process of Golang.

1. Download and install Golang

First, you need to download the Golang installation package from the Golang official website (https://golang.org/). Here you can find installation packages for different operating systems. For example, you can choose a 32-bit or 64-bit installation package for Windows operating system, MacOS or Linux, etc. If your operating system cannot find a suitable installation package, you can also download the installation package from other websites.

After the download is completed, double-click the installation package and follow the prompts to complete the installation process. After the installation is complete, you need to configure the environment variables of your operating system and add the Golang executable file to the PATH of the operating system. This will allow you to execute Golang programs in any directory.

2. Write and run your first Golang program

Next, you need to open an editor such as Sublime, VS Code, etc. Create a new file and copy and paste the following code into the file:

package main

import "fmt"

func main() {
    fmt.Println("Hello, Golang!")
}

The above code will output a simple statement "Hello, Golang!". Please note that this statement must be placed in the func main() function, otherwise it will not run. func main() is the entry function in every Golang program. At the same time, the fmt package is a package in the Golang standard library and can be used to format input and output.

Save the file and name it main.go. Next, you need to open a command prompt (Windows) or Terminal (MacOS, Linux, etc.), go into the directory where your main.go file is located and run the following command:

go run main.go

After executing this command, you should You can see the output "Hello, Golang!" on the command prompt or terminal.

3. Other common commands

When using Golang, you may often use the following common commands:

• go build: used Compile the Golang program and generate an executable file. You just run the command and specify the folder where the Golang program is located to generate an executable file.
• go fmt: used to format Golang code. This command will automatically format the code to make it easier to read.
• go get: used to obtain external Golang packages. If you need to use some library written by someone else, you can use this command to get it directly.

Summary

The above are the steps for installing and using Golang. Although Golang has a certain learning curve, it is also a powerful programming language suitable for writing efficient and elegant code. If you study seriously, maybe you will become an excellent Golang developer!

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