Quick Start: Use Go language functions to implement a simple music player

Quick Start: Use Go language functions to implement a simple music player

Music is an indispensable part of people's lives, and the development of modern technology makes it easier and easier for us to enjoy music. In the field of computer programming, we can also use various languages ​​​​to implement music players. This article will introduce how to use Go language functions to quickly implement a simple music player.

Before you start, make sure you have installed the Go language development environment. First, we need to create a file called "music_player.go" and import the required packages in it.

package main

import (
    "fmt"
    "os"
    "os/exec"
    "runtime"
)

func main() {
    fmt.Println("** Go Music Player **")
    fmt.Println("-------------------")

    songs := []string{"song1.mp3", "song2.mp3", "song3.mp3"} // 歌曲文件名列表

    playSongs(songs) // 调用播放歌曲函数
}

// 播放歌曲函数
func playSongs(songs []string) {
    for _, song := range songs { // 遍历歌曲列表
        playSong(song) // 调用播放单曲函数
    }
}

// 播放单曲函数
func playSong(song string) {
    fmt.Printf("正在播放: %s
", song)

    switch runtime.GOOS { // 根据操作系统类型选择命令
    case "darwin": // Mac OS X
        exec.Command("afplay", song).Run()
    case "linux": // Linux
        exec.Command("mpg123", song).Run()
    case "windows": // Windows
        exec.Command("cmd", "/c", "start", song).Run()
    default:
        fmt.Println("不支持的操作系统")
    }
}

In the above code, we first define a string slice "song", which contains the file name of the music file we want to play. Then, in the "main" function, we call the "playSongs" function, passing it the slice as a parameter. The "playSongs" function plays each song by traversing the slice and calling the "playSong" function one by one.

The "playSong" function selects different commands to play music based on the type of operating system the program is running on. On Mac OS

Now, we can run our music player by following these steps:

1. Place the music file (such as "song1.mp3") in the same file as "music_player.go" In the same directory;
2. Open a terminal or command line window and switch to the directory;
3. Enter the command "go run music_player.go" and press Enter.

If all goes well, you should see the music player start running and play your selected music files one by one.

We can add new music files to the "song" slice at any time, and then rerun the program to play the newly added music files.

This is just an example of a simple music player. By using the power and concise syntax of the Go language, we can easily implement more complex and powerful music players. I hope this article will help you understand how to use Go language functions to implement a music player.

Note: For convenience, this article assumes that you already have some music files, and represents them with "song1.mp3", "song2.mp3" and "song3.mp3". You can modify the code according to your needs and make sure the music files used are in the correct path.

Wish you happy programming!

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