haskell-patterns

What problem does it solve?

This set of conventions provides structured guidelines and decision rules to help developers write idiomatic, safe, and maintainable Haskell code.

Core Features & Use Cases

• Type Design: prefer newtypes, smart constructors, and sum types over booleans.
• Error Handling: use Either/ExceptT for recoverable errors; avoid partial functions.
• Application Structure: use ReaderT, MTLE-style abstractions, and limit transformer stacks.
• Strictness & Concurrency: prefer Text over String; embrace strict IO and concurrent patterns like STM and async.
• Anti-patterns: avoid partials, deep stacks, and lazy IO.

Quick Start

Adhere to these conventions when designing Haskell modules to ensure safer, clearer, and more maintainable code.