Hask3 is a pure-Python, zero-dependencies library that mimics most of the core language tools from Haskell, including:
- Full Hindley-Milner type system (with typeclasses) that will typecheck any function decorated with a Hask type signature
- Easy creation of new algebraic data types and new typeclasses, with Haskell-like syntax
- Pattern matching with case expressions
- Automagical function currying/partial application and function composition
- Efficient, immutable, lazily evaluated List type with Haskell-style list comprehensions
- All your favorite syntax and control flow tools, including operator sections, monadic error handling, guards, and more
- Python port of (some of) the standard libraries from Haskell's base,
including:
- Algebraic datatypes from the Haskell Prelude, including Maybe and Either
- Typeclasses from the Haskell base libraries, including Functor, Applicative, Monad, Enum, Num, and all the rest
- Standard library functions from base, including all functions from Prelude, Data.List, Data.Maybe, and more
Features not yet implemented, but coming soon:
- MultiParamTypeclasses
- Better support for polymorphic return values/type defaulting
- Better support for lazy evaluation (beyond just the List type and pattern matching)
- More of the Haskell standard library (Control.* libraries, QuickCheck, and more)
- Monadic, lazy I/O
Warning
Note that all of this is still very much pre-alpha, and some things may be buggy!
This is a fork of hask modified to run in Python 3.6+.
See the LICENSE file keeps the original author and rights.
Changes are copyright Merchise Autrement [~º/~] and Contributors, but with the same