curry-fp

🥘 Curry fp

Functional currying for Python.

Simple ⬦ Clear ⬦ Concise

Background

Currying is a technique targeting strategic code composition, breaking apart a function into a series of functions, allowing arguments to be applied piece-by-piece until all parameters are fulfilled.

Usage

Curry fp is a powerful tool that can be used as a decorator on Callable objects for the purpose of currying.

Features

• Allows for 1 or more arguments to be passed to the curried function at a time, including all at once.
• Default values can be specified using ... (Ellipsis) as an argument, at any point.
• Keyword arguments can be used, allowing for arguments to be passed in whenever available.

Example

from curry_fp import curry

@curry
def sum_all(a: int, b: int=2, c: int=3) -> int:
    return a + b + c

Without using default values

sum_all(1)(2)(3)
>>> 6

Using default values

sum_all(1)(...)
>>> 6

All arguments at once

sum_all(1, 2, 3)
>>> 6

All arguments at once (with defaults)

sum_all(1, 2, ...)
>>> 6

Using keyword arguments in any order

sum_all(b=2)(c=3)(a=1)
>>> 6

See test/test_curry.py for more examples. ✨