search
HomeBackend DevelopmentGolangSelect Channels using golang Basics of Go concurrent programming

使用golang进行Select Channels Go并发式编程的基础知识

Select Channels using Golang Basic knowledge of Go concurrent programming

As a modern programming language, Go language can easily Achieve efficient concurrent processing. Among them, the Select statement and Channels are very important concurrency concepts in the Go language. This article will introduce the basic knowledge of Select Channels concurrent programming using Golang and provide some specific code examples.

Channels are an important mechanism for concurrent communication in the Go language. Through Channels, data can be transferred between different Goroutines (a lightweight thread) and achieve synchronization effects. Channels have two transmission methods: blocking and non-blocking.

First, let’s take a look at how to define and use Channels:

package main

import "fmt"

func main() {
    // 创建一个字符串类型的Channel
    ch := make(chan string)

    // 向Channel发送数据
    go func() {
        ch <- "Hello, World!"
    }()

    // 从Channel接收数据
    msg := <-ch
    fmt.Println(msg)
}

In the above example code, we first created a string type through the make function Channel. Then, use ch in a new Goroutine to send the string data to the Channel. Finally, use <code>msg := to receive data from the Channel and output it to the console.

Channels can be used to easily achieve collaboration between multiple Goroutines, such as producer and consumer modes. Next, let’s take a look at how to use Channels to implement the Producer-Consumer pattern:

package main

import "fmt"

func producer(ch chan<- int) {
    for i := 0; i < 5; i++ {
        ch <- i
    }
    close(ch)
}

func consumer(ch <-chan int, done chan<- bool) {
    for num := range ch {
        fmt.Printf("Received: %d
", num)
    }
    done <- true
}

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

    go producer(ch)
    go consumer(ch, done)

    <-done
}

In the above example code, we defined two functions producer and consumer , respectively used to send data to Channel and receive data from Channel. Next, we create a Channel ch and a done Channel done respectively in the main function. Then, we start two new Goroutines through the go keyword to execute the producer and consumer functions respectively. Finally, wait for the consumer function to complete by to ensure that the program finishes executing the consumer before ending.

The Select statement is an important tool in the Go language for handling concurrent operations of multiple Channels. Through the Select statement, you can monitor operations on multiple Channels until one of the Channels is ready, and then execute the corresponding logic.

The following is a sample code that shows how to use the Select statement to listen to multiple Channels:

package main

import (
    "fmt"
    "time"
)

func main() {
    ch1 := make(chan string)
    ch2 := make(chan string)

    go func() {
        time.Sleep(time.Second * 1)
        ch1 <- "Hello, Channel 1!"
    }()

    go func() {
        time.Sleep(time.Second * 2)
        ch2 <- "Hello, Channel 2!"
    }()

    for i := 0; i < 2; i++ {
        select {
        case msg1 := <-ch1:
            fmt.Println(msg1)
        case msg2 := <-ch2:
            fmt.Println(msg2)
        }
    }
}

In the above sample code, we created two String type Channels ch1 and ch2. Then, use ch1 and <code>ch2 in two different Goroutines to send to the two Channels data. In the <code>main function, we use the Select statement to monitor two Channels. As long as one Channel is ready, the corresponding logic will be executed.

Through the above sample code, we can see how to use Golang for Select Channels Go concurrent programming. Channels and Select statements are very important concurrency concepts in the Go language. They can help us achieve efficient concurrency processing. By flexibly using Channels and Select statements, we can better take advantage of concurrent processing and improve program performance and efficiency.

The above is the detailed content of Select Channels using golang Basics of Go concurrent programming. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
go语言有没有缩进go语言有没有缩进Dec 01, 2022 pm 06:54 PM

go语言有缩进。在go语言中,缩进直接使用gofmt工具格式化即可(gofmt使用tab进行缩进);gofmt工具会以标准样式的缩进和垂直对齐方式对源代码进行格式化,甚至必要情况下注释也会重新格式化。

聊聊Golang中的几种常用基本数据类型聊聊Golang中的几种常用基本数据类型Jun 30, 2022 am 11:34 AM

本篇文章带大家了解一下golang 的几种常用的基本数据类型,如整型,浮点型,字符,字符串,布尔型等,并介绍了一些常用的类型转换操作。

go语言为什么叫gogo语言为什么叫goNov 28, 2022 pm 06:19 PM

go语言叫go的原因:想表达这门语言的运行速度、开发速度、学习速度(develop)都像gopher一样快。gopher是一种生活在加拿大的小动物,go的吉祥物就是这个小动物,它的中文名叫做囊地鼠,它们最大的特点就是挖洞速度特别快,当然可能不止是挖洞啦。

一文详解Go中的并发【20 张动图演示】一文详解Go中的并发【20 张动图演示】Sep 08, 2022 am 10:48 AM

Go语言中各种并发模式看起来是怎样的?下面本篇文章就通过20 张动图为你演示 Go 并发,希望对大家有所帮助!

tidb是go语言么tidb是go语言么Dec 02, 2022 pm 06:24 PM

是,TiDB采用go语言编写。TiDB是一个分布式NewSQL数据库;它支持水平弹性扩展、ACID事务、标准SQL、MySQL语法和MySQL协议,具有数据强一致的高可用特性。TiDB架构中的PD储存了集群的元信息,如key在哪个TiKV节点;PD还负责集群的负载均衡以及数据分片等。PD通过内嵌etcd来支持数据分布和容错;PD采用go语言编写。

聊聊Golang自带的HttpClient超时机制聊聊Golang自带的HttpClient超时机制Nov 18, 2022 pm 08:25 PM

​在写 Go 的过程中经常对比这两种语言的特性,踩了不少坑,也发现了不少有意思的地方,下面本篇就来聊聊 Go 自带的 HttpClient 的超时机制,希望对大家有所帮助。

go语言是否需要编译go语言是否需要编译Dec 01, 2022 pm 07:06 PM

go语言需要编译。Go语言是编译型的静态语言,是一门需要编译才能运行的编程语言,也就说Go语言程序在运行之前需要通过编译器生成二进制机器码(二进制的可执行文件),随后二进制文件才能在目标机器上运行。

golang map怎么删除元素golang map怎么删除元素Dec 08, 2022 pm 06:26 PM

删除map元素的两种方法:1、使用delete()函数从map中删除指定键值对,语法“delete(map, 键名)”;2、重新创建一个新的map对象,可以清空map中的所有元素,语法“var mapname map[keytype]valuetype”。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools