Go language library resource summary: quickly find the callable libraries you need

The Go language has rich library resources, including: net/http: managing HTTP requests and responses database/sql: connecting and querying relational databases encoding/json: encoding and decoding JSON data fmt: formatting input and output io: Input and output operations log: Logging messages math: Mathematical functions os: Interacting with the operating system path: Processing file paths regexp: Regular expression matching sync: Concurrent programming A third-party resource library is also provided to find more libraries.

Go language library resource summary: quickly find the callable libraries you need

The Go language is famous for its rich standard library and active community. It contains many libraries to help you complete many common tasks. In this guide, we will introduce some of the most popular and useful Go language libraries and demonstrate their usage through practical examples.

Practical case: Create an HTTP server using the net/http library

net/http The library provides a simple API for you The application creates and handles HTTP requests and responses.

package main

import (
    "fmt"
    "net/http"
)

func main() {
    // 创建一个HTTP处理程序函数
    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        fmt.Fprintf(w, "Hello, World!")
    })

    // 启动HTTP服务器
    http.ListenAndServe(":8080", nil)
}

Run this program in the terminal:

$ go run main.go

Then visit http://localhost:8080 in the browser, you will see "Hello, World! " information.

Other useful Go language libraries

• database/sql: Used to connect and query relational databases.
• encoding/json: Used to encode and decode JSON data.
• fmt: Used to format input and output.
• io: used for input and output operations.
• log: Used to log messages.
• math: used for mathematical functions.
• os: Used to interact with the operating system.
• #path: Used to process file paths.
• regexp: used for regular expression matching.
• sync: used for concurrent programming.

Find more libraries

• Third-party Go language package resource library: https://github.com/golang/go/wiki/ Modules#third-party-modules
• awesome-go: https://github.com/avelino/awesome-go
• godoc.org: https://godoc.org

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