Go Get: A guide to dependency management for Go programs

Go Get is a dependency management tool for the Go programming language, used to download, install and manage software dependencies. Its basic usage is to enter the command "go get ", such as "go get github.com/spf13/viper". It follows best practices and provides automatic dependency versioning and caching. The Go Get command also provides useful flags such as "-u" (update), "-v" (show output details), and "-f" (force installation). In actual combat, you can obtain configuration information through "viper.Get()", such as "fmt.Println("Server Port:", viper.Get("server.port"))".

Go Get: Dependency Management Guide for Go Programs

Introduction

Go Get is a package management tool built into the Go programming language. Used to download, install and manage software dependencies. It follows best practices for dependency versioning and caching and is the standard way to manage dependencies in Go programs.

Basic Usage

To use Go Get, enter the following command in the terminal:

go get <包名>

For example, to install github.com/spf13/viper package, please use:

go get github.com/spf13/viper

Pass flags

The Go Get command accepts several useful flags:

• -u: Update the current Some packages
• -v: Show detailed output about the download and installation process
• -f: Force installation of packages even if there are version conflicts
• -t: Only run tests without installing packages

Practical case

The following is a practical example of using Go Get to manage dependencies Case:

package main

// 使用 Viper 包加载配置
import (
    "fmt"

    "github.com/spf13/viper"
)

func main() {
    viper.SetConfigName("config")
    viper.AddConfigPath(".")
    err := viper.ReadInConfig()
    if err != nil {
        panic(fmt.Errorf("Fatal error config file: %s ", err))
    }

    fmt.Println("Server Port:", viper.Get("server.port"))
}

Enter the following command in the terminal to install github.com/spf13/viper Package:

go get github.com/spf13/viper

Run the program:

go run main.go

This will print The value of server.port in the configuration.

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