Go (Golang) Tutorial Roadmap

Introduction to Go (Golang)

Overview of Go

Go (also known as Golang) is an open-source, statically typed, compiled programming language developed by Google. It is designed for simplicity, performance, and scalability, making it ideal for cloud services, distributed systems, and backend development.

Basic Go Program

Structure of a Go program
Writing and running a simple “Hello, World” program

Go Language Fundamentals

Identifiers

Naming rules and conventions in Go

Data Types in Go

Basic data types: int, float, string, bool
Composite data types: arrays, slices, structs
Reference types: pointers, maps, channels

Constants

Declaring constants using const
Typed vs untyped constants

Control Statements in Go

Conditional Statements

if statement
if-else statement
Nested if
if-else-if ladder

Loops in Go

for loop
Infinite loops
Loop control using break and continue

Switch Statement

Expression switch
Type switch

Functions and Methods

Functions in Go

Defining and calling functions

Variadic Functions

Functions with variable number of arguments

Anonymous Functions

Lambda-style functions

Defer Keyword

Deferred function execution

Methods in Go

Methods with receiver types

Structures in Go

Structures

Defining and using structs

Nested Structures

Structs within structs

Anonymous Structures and Fields

Inline struct definitions

Arrays in Go

Arrays

Declaring and initializing arrays

Copying Arrays

Copying one array into another

Slices in Go

Slices Overview

Creating and using slices

Slice Composite Literals

Slice initialization techniques

Strings in Go

Working with Strings

String declaration
Common string operations

Pointers in Go

Pointer Basics

Understanding pointers

Passing Pointers to Functions

Call-by-reference behavior

Pointer to Struct

Accessing struct fields using pointers

Double Pointer

Pointer to pointer

Comparing Pointers

Pointer comparison rules

Object-Oriented Programming in Go

OOP Concepts in Go

Structs as objects
Methods and interfaces

Concurrency in Go

Goroutines

Lightweight threads

Channels

Communication between goroutines

Unidirectional Channels

Send-only and receive-only channels

Select Statement

Handling multiple channel operations

Error Handling in Go

Defer

Resource cleanup

Error Handling

Using the error interface

Custom Errors

Creating custom error types

Error Wrapping

Wrapping and unwrapping errors

Panic and Recover

Handling runtime panics

First-Class Functions

Functions as values
Passing functions as arguments

Reflection in Go

Reflection

Inspecting types at runtime
reflect package usage

File Handling in Go

Reading Files

Reading file contents

Writing Files

Writing data to files