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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
Resources
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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