Go Tutorial

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Course Contents

Go Fundamentals

• Go Introduction
• Installing Go
• Go Get Started (Hello World)
• How Go Works: Compiled and Statically Typed
• Go Modules and go.mod
• The go run, go build, and go install Commands

Go Basics

• Variables and var
• Short Variable Declaration (:=)
• Basic Types
• Constants and iota
• Type Conversion
• Formatting and Printing (fmt)

Control Flow

• if and else
• for Loops (Go’s Only Loop)
• switch Statements
• defer
• panic and recover

Functions

• Functions in Go
• Multiple Return Values
• Named Return Values
• Variadic Functions
• Functions as Values and Closures
• Anonymous Functions

Arrays, Slices, and Maps

• Arrays
• Slices Explained
• append and Slice Growth
• Slicing a Slice
• Maps
• Iterating with range

Structs and Methods

• Structs
• Struct Embedding
• Methods on Structs
• Pointer Receivers vs Value Receivers
• Struct Tags

Pointers and Memory

• Pointers in Go
• Passing by Value vs by Reference
• The new and make Functions
• Stack vs Heap and Escape Analysis

Interfaces

• Interfaces Explained
• Implicit Interface Satisfaction
• The Empty Interface (any)
• Type Assertions
• Type Switches
• The Error Interface

Error Handling

• Error Handling in Go
• Creating Custom Errors
• Wrapping Errors with fmt.Errorf and %w
• errors.Is and errors.As
• When to panic vs Return an Error

Concurrency: Goroutines

• Goroutines Explained
• The go Keyword
• sync.WaitGroup
• Race Conditions
• sync.Mutex

Concurrency: Channels

• Channels Explained
• Buffered vs Unbuffered Channels
• select Statements
• Worker Pools
• Context for Cancellation

Packages and Modules

• Organizing Code into Packages
• Exported vs Unexported Identifiers
• Importing Packages
• The Standard Library Tour
• Third-Party Modules and go get

Testing

• Writing Tests with the testing Package
• Table-Driven Tests
• Benchmarks
• Test Coverage

Go for Web and I/O

• Reading and Writing Files
• JSON Encoding and Decoding
• Building an HTTP Server with net/http
• Handling HTTP Requests and Routing
• Making HTTP Requests with net/http Client

Go Best Practices

• Go Naming Conventions
• Effective Error Handling Patterns
• gofmt and go vet
• Common Go Mistakes
• Go Command Reference