functon 0.0.2.dev0

True functional programming in Python

Functon λ [EXPERIMENTAL]

Installation

python3 -m pip install functon

Usage

Hello world:

>>> from functon import fn
>>> fn(print, "Hello world!")
'Hello world!'

Triple the value of a number:

>>> from functon import defun, fn
>>> def triple(x: int) -> defun(("*", 3, "x")):
...     """Compute three times X."""
>>> fn(triple, 3)
9

Compute factorials using recursion:

>>> from functon import defun, fn, IF
>>> def factorial(N: int) -> defun((IF, ("=", "N", 1), 1, ("*", "N", ("factorial", ("-", "N", 1))))):
...     """Compute the factorial of N."""
>>> fn(factorial, 5) 
120