A Beginner's Guide to Go: Building Modern Applications

Go Language Getting Started Guide: Building Modern Applications

Go language is an open source programming language developed by Google. It is known for its simplicity and efficiency. and concurrency. This guide will take you on a journey to get started with the Go language so you can use it to build modern applications.

Install Go language

Install Go language on the machine:

• Visit https://go.dev/dl to download and install Installation package for your operating system.
• Follow the installation wizard and add the Go language to your environment variables.

Writing your first Go program

Create a file named hello.go and enter the following code:

package main

import "fmt"

func main() {
    fmt.Println("Hello, Go!")
}

Run the program:

go run hello.go

You will see "Hello, Go!" in the console.

Basic syntax

The Go language has a concise syntax:

• Variable declaration and initialization: var name type = value
• Constant declaration: const name type = value
• Data type: bool, int, string, float, complex
• Operator: , -, *, /, %, ==
• Conditional statements: if, else, switch

##Practical case: Web server

Build a simple web server using Go language:

Create

server.go:

package main

import (
    "fmt"
    "net/http"
)

func main() {
    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        fmt.Fprintf(w, "Hello, world!")
    })

    http.ListenAndServe(":8080", nil)
}

Run the server:

go run server.go

Visit http://localhost :8080 View "Hello, world!" in your browser.

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