Refined is a Scala library that enhances types with compile-time constraints using predicate-style refinement types. It allows embedding validation logic into types like Refined[Int, Positive], ensuring invalid values are rejected at compile or runtime, thereby increasing safety and reducing boilerplate in domain modeling.

Features

  • Rich predicate support (e.g. Positive, NonEmpty, range constraints)
  • Compile-time verified refinements for constant values
  • Seamless integration with type-level programming and shapeless
  • Automatic validation via implicits and macros
  • Interoperability with Circe, Cats and other functional libraries
  • Reduces boilerplate in checking invariants during runtime

Project Samples

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Libraries

License

MIT License

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Additional Project Details

Programming Language

Scala

Related Categories

Scala Libraries

Registered

2025-08-04