The article explores building a Haskell-style type class instance resolution engine entirely in plain Java using reflection and generic type metadata. It demonstrates support for higher-kinded types, overlapping instances, and witness resolution for nested generics, implemented without language changes.
Background
Type classes are a core Haskell feature for ad-hoc polymorphism. Java's type system, despite erasure, retains enough runtime generic metadata to approximate type-level programming.
- Source
- Lobsters
- Published
- Oct 27, 2026 at 06:11 PM
- Score
- 7.0 / 10