newtype

Some more derive(Trait) options

Rust newtype with guarantees 🇺🇦 🦀

NewTypes for Scala with no runtime overhead

Unboxed (multi-nested-)tagged + unboxed newtypes. Better and much friendlier alternative to AnyVals.

Nearly zero runtime object allocation powered by scalameta. Value class and Unboxed Tagged Type generation at compile-time.

derive newtype for diesel traits

Helpers for easily using failure::Error and others as return types in main() while still giving human-readable error messages.

Solutions to exercises from the book Haskell Programming

A few extra tools

Sensible, performant primitives for writing semantic TypeScript code

newtype and refinement (refined) type for Scala 3

Opaque type encoding for convenient new types, and boilerplate minimization of integration with 3rd party libraries like circe, http4s, doobie, skunk, etc.

Beautiful way to create new types for your Python classes!

Newtype, Generic Interface Deriving

Newtype macros for commonly reused types in Rust.

Introduction into fs2, newtype and refined types.

a type with 1 variant but convenient

Reference implementation of https://github.com/gothinkster/realworld using typelevel stack, refined and newtype