How to implement concurrency in golang

To achieve concurrency, you can start a new "goroutine" through the keyword "go": 1. Define a function "doSomething" and write specific concurrent task logic; 2. Define the "main" function, Just start a new "goroutine" through the "go" keyword, while the main program continues to execute other logic.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

In the Go language, implementing concurrency is very simple and powerful. The Go language has a built-in lightweight threading model called goroutine, as well as channels for communication between goroutines.

To achieve concurrency, you can start a new goroutine through the keyword go, for example:

func main() {
    // 启动一个新的 goroutine
    go doSomething()

    // 主程序继续执行其他逻辑
    // ...
}

func doSomething() {
    // 这里编写具体的并发任务逻辑
}

Through the go keyword, the doSomething() function will be concurrent in an independent goroutine execution, while the main program can continue to execute other logic.

In addition, goroutines can communicate through channels to achieve data synchronization and sharing. The following is a simple example:

func main() {
    ch := make(chan int)

    // 启动一个goroutine发送数据到通道
    go func() {
        ch <- 42
    }()

    // 从通道中接收数据
    value := <- ch
    fmt.Println(value) // 输出: 42
}

In this example, we create a channel ch of integer type, and then send the integer 42 to the channel in the goroutine where the anonymous function is located, and in the main goroutine Receive data from the channel and print it out.

This concurrency model based on goroutine and channels makes it very simple and efficient to implement concurrency in the Go language.

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