Go Fundamentals

Contents

1. Go Basics

   Getting Set Up

   • Installing GoBeginner3 min read
   • Modules & Running CodeBeginner3 min read
   • The Go ToolchainBeginner3 min read

   Getting Started

   • Hello, WorldBeginner2 min read
   • Values and TypesBeginner3 min read
   • VariablesBeginner3 min read
   • ConstantsBeginner3 min read

   Control Flow & Functions

   • The For LoopBeginner3 min read
   • If and ElseBeginner3 min read
   • SwitchBeginner3 min read
   • FunctionsBeginner3 min read

   Pointers & Functions

   • PointersBeginner3 min read
   • ClosuresBeginner2 min read
   • Variadic FunctionsBeginner3 min read
   • Defer, Panic, and RecoverIntermediate3 min read

2. Collections & Structs

   Arrays, Slices, and Maps

   • ArraysBeginner3 min read
   • SlicesBeginner3 min read
   • Growing SlicesBeginner3 min read
   • MapsBeginner3 min read

   Text and Structs

   • Strings and RunesBeginner3 min read
   • StructsBeginner3 min read

3. Methods, Interfaces & Errors

   Methods

   • MethodsIntermediate3 min read
   • Pointer ReceiversIntermediate3 min read

   Interfaces

   • InterfacesIntermediate3 min read
   • Type Assertions and SwitchesIntermediate3 min read

   Errors and Generics

   • Errors Are ValuesIntermediate3 min read
   • Wrapping and Sentinel ErrorsIntermediate3 min read
   • GenericsIntermediate3 min read

   Composition & Embedding

   • Struct EmbeddingIntermediate3 min read
   • Method Promotion & OverridingIntermediate3 min read
   • Interface Embedding & CompositionIntermediate3 min read

   Advanced Error Handling

   • Custom Error TypesIntermediate3 min read
   • Joining Errors with errors.JoinIntermediate3 min read

   Generic Programming

   • Type Constraints in DepthIntermediate3 min read
   • Generic TypesIntermediate3 min read
   • A Generic ToolkitAdvanced3 min read

4. Concurrency

   Goroutines and Channels

   • GoroutinesIntermediate3 min read
   • ChannelsIntermediate3 min read
   • Buffered and Directional ChannelsIntermediate3 min read

   Coordination

   • SelectAdvanced3 min read
   • Mutexes and WaitGroupsIntermediate4 min read
   • ContextAdvanced4 min read

   Concurrency Patterns

   • Worker PoolsAdvanced3 min read
   • Fan-inAdvanced3 min read
   • Bounded Parallelism with a SemaphoreAdvanced3 min read

   Atomic Operations and RWMutex

   • Atomic CountersIntermediate3 min read
   • RWMutex for Read-Heavy AccessIntermediate2 min read

5. Go in Practice

   The Standard Library

   • TestingIntermediate3 min read
   • Strings and ConversionsIntermediate3 min read
   • SortingIntermediate3 min read
   • JSONIntermediate3 min read
   • Capstone: A Tiny Word IndexIntermediate3 min read

   Readers & Writers

   • The Writer InterfaceIntermediate3 min read
   • The Reader InterfaceIntermediate3 min read
   • Composing Readers and WritersIntermediate3 min read

   JSON in Depth

   • Nested & Composite JSONIntermediate4 min read
   • Dynamic JSONIntermediate4 min read
   • Custom & Streaming JSONIntermediate3 min read

   Testing in Depth

   • Test HelpersIntermediate4 min read
   • Parallel TestsIntermediate4 min read
   • Benchmarks & FuzzingIntermediate4 min read

   Time & Timers

   • Durations & TimeIntermediate4 min read
   • Timers & TickersIntermediate4 min read
   • Context in PracticeIntermediate4 min read

   Building HTTP Services

   • Handlers & RoutingIntermediate3 min read
   • JSON APIsIntermediate4 min read
   • MiddlewareIntermediate4 min read

   Packages & Project Layout

   • Packages and Project LayoutIntermediate3 min read

   Debugging Someone Else's Code

   • Reading Code That's Already BrokenIntermediate3 min read
   • Finding a Goroutine LeakIntermediate3 min read
   • Diagnosing a DeadlockIntermediate3 min read

   Files and the os Package

   • Reading and Writing FilesIntermediate3 min read

   Outbound HTTP

   • Calling Another ServiceIntermediate3 min read

   CLI Programs

   • Parsing Command-Line FlagsIntermediate3 min read
   • Structured Logging BasicsIntermediate3 min read