Learning materials and resources for Golang function library

Golang function library learning materials and resources

The Golang standard library provides a wide range of functions and types that are essential for building powerful applications important. This article will provide information and resources for learning the function library, and include practical cases to help you understand its usage.

Learning materials

• [Go function library official documentation](https://pkg.go.dev/): Detailed introduction to all standard functions and types official documentation.
• [Go by Example: Function Library](https://go.dev/tour/pkg/index.html): An interactive tutorial that introduces examples of using the function library to solve common problems.
• [Go 101: Function Library](https://go101.org/article/packages.html): A step-by-step tutorial covering the basic concepts and usage of function libraries.
• [Effective Go: Function Libraries](https://go.dev/doc/effective_go#packages): A guide to best practices and library design principles.

Resources

• [Go Function Library Wiki](https://github.com/golang/go/wiki/GoPackages): Maintenance List of function libraries with descriptions and examples.
• [Awesome Go](https://github.com/avelino/awesome-go#function-utilities): List of useful function libraries and tools.
• [Go Forum - Function Library](https://forum.golangbridge.org/c/packages/25): An active community forum that can solve problems related to the function library.

Practical case

Use fmt function library to format string

import "fmt"

func main() {
    fmt.Println("格式化字符串：", "Go", "函数库")
}

Output:

格式化字符串： Go 函数库

Convert string to integer using strconv function library

import "strconv"

func main() {
    num, err := strconv.Atoi("123")
    if err != nil {
        fmt.Println(err)
        return
    }
    fmt.Println("转换后的整数：", num)
}

Output:

转换后的整数： 123

Use os function library to obtain environment variables

import "os"

func main() {
    path := os.Getenv("PATH")
    fmt.Println("环境变量 PATH：", path)
}

Output:

环境变量 PATH： /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

Follow-up learning

As you learn As you progress, explore additional libraries such as math, regexp and database/sql to extend your application's capabilities. Remember to check out the official documentation and resources to learn more and resolve issues you encounter.

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