cats
https://github.com/typelevel/cats
Scala
Lightweight, modular, and extensible library for functional programming.
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- Issues
- replicateA_ consistency tests creates very large values
- Benchmark `Apply.TraverseStrategy` concept
- Add `groupByNelMap` method to `List` syntax
- `imap(f)(g)` produces an invalid Semigroup in some cases
- `imap` requires that `f.andThen(g) == identity`
- missing `package object double extends DoubleInstances`
- typeclass-based collections implementations
- Proposal to add Validated.ensureA[EE >: E, B](A => Validated[EE, B]): Validated[EE, A]
- [Perf] `Set.contains(value)` vs `alleyCatsSetTraverse.contains_(value)`
- IDEA: Auto generate Monoid[FunctionN]
- Docs
- Scala not yet supported