cats
https://github.com/typelevel/cats
Scala
Lightweight, modular, and extensible library for functional programming.
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- Issues
- `imap` requires that `f.andThen(g) == identity`
- typeclass-based collections implementations
- Proposal to add Validated.ensureA[EE >: E, B](A => Validated[EE, B]): Validated[EE, A]
- Add Order2 And Friends TypeClasses
- Cats 3 Roadmap
- WIP: Selective
- absorption/lifting typeclass to generalize a few concepts
- add Selective
- Add Tolerance for numeric instances in Kernel
- Invariant super class of Alternative and Decidable
- Docs
- Scala not yet supported