oa-utils 0.1.15

Statically typed Python utilities for functional programming.

oa-utils

Statically typed Python utilities for functional programming.

Pipeline

This class is useful for programming in the collection pipeline style. It wraps a homogenous variadic tuple and exposes a fluent interface with common functional programming operations. Why a tuple and not a "lazy" iterator? Because a tuple is relatively immutable and because, in my opinion, reified collections are much easier to reason about than stateful iterators.

from oa_utils.pipeline import Pipeline

result = (Pipeline(range(10))
            .filter(lambda x: x % 2 == 0)
            .map(lambda x: x * x)
            .sum()) # 120

See pipeline.py for docstrings and doctests of every method.