Cross-platform development is no longer a problem: learn Go language

Cross-platform development is no longer a problem: learning Go language

With the development of technology and the process of globalization, the demand for cross-platform development is growing. As an open source, compiled language, Go language has become one of the popular languages ​​for many developers to learn due to its powerful concurrency features and concise syntax. This article will introduce how to use Go language for cross-platform development, with code examples.

1. Installing Go language
   First, we need to install the Go language environment. Please go to the official website https://golang.org/ to download the installation package suitable for your system and follow the installation wizard. After the installation is complete, open a terminal or command prompt and enter the following command to verify whether the Go language is installed successfully:

go version

If the currently installed Go version information is output, the installation is successful.

2. Developing cross-platform applications
   Next, we will use the Go language to develop a simple cross-platform application to demonstrate its cross-platform features. We'll write a program that will run on Windows, Linux, and macOS and print "Hello, World!"

First, create a new folder and create a file named main.go under the folder. Open the main.go file using any text editor and enter the following code:

package main

import "fmt"

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

Save the file and return to the terminal or command prompt interface. In the folder where the file is located, enter the following command to compile and run the program:

go run main.go

If all goes well, you will see "Hello, World!" output on the screen.

3. Building the executable file
   Now, we want to build the Go program into an executable file that can run on different operating systems.

In the terminal or command prompt interface, enter the folder where main.go is located, and enter the following command:

For Windows systems:

go build -o hello.exe

For Linux and macOS systems:

go build -o hello

In this way, the Go language will generate a file named hello.exe (for Windows systems) or hello (for Linux and macOS systems) executable file.

In Windows systems, you can directly double-click hello.exe to run the program; while in Linux and macOS systems, you need to enter the following command in the terminal to run the program:

./hello

4. Build executable files for other platforms
   The Go language provides a simple way to build executable files for other platforms. Just add the parameters corresponding to the target platform in the build command.

For Windows systems, build the executable files for Linux and macOS platforms:

GOOS=linux GOARCH=amd64 go build -o hello-linux
GOOS=darwin GOARCH=amd64 go build -o hello-macos

For Linux systems, build the executable files for Windows and macOS platforms:

GOOS=windows GOARCH=amd64 go build -o hello.exe
GOOS=darwin GOARCH=amd64 go build -o hello-macos

For macOS systems, build executable files for Windows and Linux platforms:

GOOS=windows GOARCH=amd64 go build -o hello.exe
GOOS=linux GOARCH=amd64 go build -o hello-linux

In this way, you get an executable file that can run on different platforms.

Summary:
By learning Go language, we can easily carry out cross-platform development. Go language provides concise, efficient syntax and powerful concurrency features, making it easier for us to develop, build and deploy applications that can run on multiple operating systems. I hope this article can help readers better understand and apply the cross-platform development capabilities of Go language.

Attached code example:

package main

import "fmt"

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

The above is a simple Go language program that can be compiled and run on different operating systems.

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