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A library trying to clone the Haskell-Prelude for python3

Project description

A library trying to clone the Haskell-Prelude for python3 :

http://hackage.haskell.org/package/base-4.8.1.0/docs/Prelude.html

Why? Because rapid prototyping for Haskell should be a thing! Okay if you want you can use it for something useful aswell…

Features

The newType function

Just, Nothing = newType('Maybe', ('Just', 1), ('Nothing', 0), deriving={'Eq','Show'})

constructor matching

def isJust(x):
    return Just(match=x)

def isNothing(x):
    return x==Nothing

type-classes

def mapB(func, b):
    return b


T, F = newType("B", ("T",0), ("F",0), deriving={"Eq","Show"}, implements={Functor : {"fmap" : mapB} })

print(fmap(lambda x: x*2, T)) # 'T()'

operators

'$ as |'

@libfunc
def f(x):
    return x

print( f | (lambda x: x*3) | (lambda x: x+1) | 2) #9


'. as *'

g = (lambda x: x*3) * f * (lambda x: x+1) * (lambda x: x+1)

print(g(2)) #8

Project details


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Source Distribution

pylude-0.0.7.tar.gz (11.7 kB view hashes)

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