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Functional Programming in Dart. Purify your Dart code using efficient immutable data structures, monads, lenses and other FP tools.

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Functional programming in Dart

  • Type class hierarchy in the spirit of cats, scalaz and the standard Haskell libraries
  • Immutable, persistent collections, including IVector, IList, IMap, IHashMap, ISet and AVLTree
  • Option, Either, State, Tuple, Free, Lens and other tools for programming in a functional style
  • Evaluation, a Reader+Writer+State+Either+Future swiss army knife monad
  • Type class instances (Monoids, Traversable Functors, Monads and so on) for included types, as well as for several standard Dart types
  • Conveyor, an implementation of pure functional streaming
  • Examples, showcasing core concepts
New to functional programming?

A good place to start learning is the excellent Functional Programming in Scala by Paul Chiusano and Rúnar Bjarnason. I can not recommend this book highly enough.
You can also take a look at Category Theory for Programmers by Bartosz Milewski.

Status
  • Starting with version 0.10.0, Dart 2.12+ is required
  • 0.9.x supports Dart 1 and older Dart 2 versions
  • Basic type class structure and collection classes are relatively stable, but might see restructuring in future releases
  • Optimized for dart2js/node/v8, with performance on the dart vm being of distant secondary concern
  • Most things are stack safe and reasonably efficient, but there are a couple of exceptions and plenty of room for further optimizations
  • The streaming/conveyor stuff is highly experimental
  • The lens implementation is experimental and very bare bones
License/Disclaimer

See LICENSE

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Functional Programming in Dart. Purify your Dart code using efficient immutable data structures, monads, lenses and other FP tools.

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