About This Site | Haskell - Wyatt's Notes

Wyatt’s Notes provides thorough study materials for Haskell programming. These notes cover Haskell’s type system, monads, type classes, and functional programming paradigms, building the skills needed for pure functional programming and academic computer science.

These notes are developed by Wyatt, an educator and content creator with expertise in Haskell and functional programming theory. Content follows a structured progression from basic syntax through monads to advanced type-level programming.

Materials emphasise Haskell’s purity, lazy evaluation, and the algebraic type system that makes Haskell uniquely expressive. Every concept includes practical examples and connects to the theoretical foundations from category theory and type theory.

• Language fundamentals covering syntax, types, and pattern matching
• Type classes with polymorphism, instances, and deriving
• Monads covering IO, Maybe, List, and monad transformers
• Functional programming with higher-order functions and composition
• Advanced types including GADTs, type families, and dependent types

Wyatt develops resources across Haskell, programming theory, and computer science, providing the academic perspective that deepens Haskell materials. Content is informed by Haskell specification, research papers, and production Haskell codebase analysis.

• Elixir — Elixir programming resources
• Computer Science — Computer science theory notes
• Programming — Multi-language programming resources

Start with the fundamentals to build a solid Haskell foundation. Each topic progresses from basic syntax to advanced type-level programming. Use the practice problems to develop your functional programming skills.

Visit wyattsnotes.wyattau.com for the full network of study resources.

This site provides comprehensive study materials covering:

• Functional programming
• Monads
• Type classes
• Laziness

Each topic includes detailed explanations, worked examples, and practice problems designed to build deep understanding.

1. Start with fundamentals — begin with the core topics before moving to advanced material
2. Work through examples — every concept includes worked examples with step-by-step solutions
3. Test yourself — use the practice problems and diagnostic tests to identify knowledge gaps
4. Cross-reference — related topics on other sites in the Wyatt’s Notes network provide additional perspectives

• Flashcards — spaced repetition flashcards for key concepts and formulas
• Practice Problems — graded problems from basic to advanced
• Diagnostic Tests — identify your strengths and weaknesses
• Worked Examples — step-by-step solutions to common problems

These notes are informed by standard university textbooks including Learn You a Haskell, Real World Haskell. While the notes follow the general structure of these texts, they are not a substitute for reading the primary sources.

programming fundamentals

Wyatt’s Notes is a network of 45+ study sites covering physics, mathematics, computer science, programming languages, and more. Each site is built with Astro and Starlight, using SolidJS for interactive components.

• Mathematics — University-level mathematics
• Physics — University-level physics
• Computer Science — Algorithms, data structures, and theory
• Programming — Programming fundamentals and practice

For questions, corrections, or suggestions, visit wyattsnotes.wyattau.com or open an issue on GitHub.

• Haskell
• Advanced Haskell Flashcards
• Haskell Basics Flashcards

This topic covers the fundamental principles and applications in depth. Each concept is explained with clear definitions, worked examples, and practice problems to reinforce understanding.

Understanding these core concepts is essential for mastering this topic. They form the foundation for more advanced study and are frequently examined.

Worked examples demonstrate how to apply the concepts to solve problems. Each example is broken down into clear steps with explanations.

• Rushing through foundational material
• Not practising problems after reading
• Failing to connect concepts across topics

Consult the recommended textbooks and additional resources for deeper understanding of this topic.

This topic covers the fundamental principles and applications in depth. Each concept is explained with clear definitions, worked examples, and practice problems to reinforce understanding.

Understanding these core concepts is essential for mastering this topic. They form the foundation for more advanced study and are frequently examined.

Worked examples demonstrate how to apply the concepts to solve problems. Each example is broken down into clear steps with explanations.

• Rushing through foundational material
• Not practising problems after reading
• Failing to connect concepts across topics

Consult the recommended textbooks and additional resources for deeper understanding of this topic.

This topic covers the fundamental principles and applications in depth. Each concept is explained with clear definitions, worked examples, and practice problems to reinforce understanding.

Understanding these core concepts is essential for mastering this topic. They form the foundation for more advanced study and are frequently examined.

Worked examples demonstrate how to apply the concepts to solve problems. Each example is broken down into clear steps with explanations.

• Rushing through foundational material
• Not practising problems after reading
• Failing to connect concepts across topics

Consult the recommended textbooks and additional resources for deeper understanding of this topic.