Choose Your Learning Path
Master functional programming through topic-based learning paths. Start with foundations, build on data structures, learn type classes, and progress to advanced patterns.
Start with Foundations
Learn composition (Pipe/Flow) and error handling (Option/Either)
Master Data & Type Classes
Work with collections and algebraic structures
Apply to Real-World
Async operations and production patterns
🎯 Core Foundations
Start here! Learn function composition and error handling - the building blocks of fp-ts.
Either
Handle computations that might fail with explicit error handling
Option
Handle nullable values safely without null/undefined errors
📊 Working with Data
Apply functional patterns to collections and objects.
Array
Master functional array operations and data transformations
NonEmptyArray
Type-safe arrays with guaranteed at least one element
🧮 Type Classes
Learn algebraic structures for combining, ordering, and validating data.
Semigroup
Combine values systematically with the concat operation
⚡ Async Operations
Handle asynchronous work with type-safe error handling.
TaskEither
Async operations with error handling for real-world apps
🚀 Advanced Patterns
Production-ready patterns for dependency injection, side effects, and complex scenarios.
ReaderTaskEither
The ultimate composition: DI + async + error handling