Complete Go Course

Introduction

• Young and popular programming language in cloud engineering.
• Objective: Learn Go by building a simple CLI application.

Course Contents

1. Motivation behind Go: Usage, differences, and features.
2. Development Environment Setup:
   • Installation of Visual Studio Code.
   • Installation of the Go compiler.
3. Basic Structure of a Go File.
4. Development of a Ticket Booking Application:
   • Common data types: strings, integers, booleans, arrays, slices, maps, structs.
   • Variables and constants.
   • Formatted output, input, and user validation.
   • Pointers and variable scopes.
   • Flow control: loops, if-else, and switch statements.
   • Logic encapsulated in functions.
   • Code organization into packages.
   • Concurrency with goroutines.

Motivation Behind Go

• Developed by Google in 2007.
• Motivation: Adapt to infrastructure improvements (multi-core, cloud).
• Multithreading Examples: Google Drive, YouTube.
• Concurrency Issues: Avoid errors in parallel tasks.
• Go Advantages: Simplification in writing concurrent and multithreaded applications.
• Key Feature: Easy writing of high-performance applications on modern scalable platforms.
• Common Use: Backend, microservices, database services, and more.
• Examples of technologies written in Go: Docker, Kubernetes, CockroachDB.
• Simplicity and efficiency: Simple syntax, fast applications, and resource efficiency.
• Compiled Language: Fast compilation to a single binary, executable on different platforms.
• Popularity in DevOps/SRE: Automation and CLI applications.

Development Environment Setup

1. Installation of Visual Studio Code.
2. Installation of the Go compiler.
3. Environment preparation in Visual Studio Code:
   • Creation of a folder for the project.
   • Installation of the necessary extensions for Go.

Creation of the CLI Application

1. Basic Structure of a Go File: main.go
2. **Welcome Message: