list-methods 0.1.0

Add .map, .filter and .reduce as list methods

list_methods

Tired of not having map, filter and reduce as easily available like in Javascript, Java, Kotlin etc? Fear, not this is the class for you.

Installation

pip install list_methods

Use

>>> from list_methods import L
>>> l = L([1,2,3])
>>> plusone = lambda x : x+1
>>> greater_than_noe = lamda x : x > 1
>>> l.map(plus_one).c()
[2,3,4]
>>> l.filter(greater_than_one).c()
[2,3]
>>> l.map(plus_one).map(plus_one).filter(greater_than_one).c()
[3,4,5]
>>> agg_plus = lambda x,y: x+y
>>> l.reduce(agg_plus)
6

Gotchas

Remember to call the .c() method since this resets the object so it can be used further. This is not necessary when ending the pipeline with .reduce()

Javascript

> l = [1,2,3]
> l.map(x => x +1)
[2,3,4]
> l.map(x => x +1)
[2,3,4]

list_methods - Python

>>> l.map(plus_one)
[2,3,4]
>>> l.map(plus_one)
[3,4,5]

TODO

• Write tests
• Write benchmarks