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Functional Python Programming - Second Edition
book

Functional Python Programming - Second Edition

by Steven F. Lott
April 2018
Intermediate to advanced content levelIntermediate to advanced
408 pages
10h 42m
English
Packt Publishing
Content preview from Functional Python Programming - Second Edition

Using stateful sets

Python offers several stateful collections, including the set collection. For our purposes, there are two use cases for a set: a stateful set that accumulates items, and frozenset that is used to optimize searches for an item.

We can create frozenset from an iterable in the same way we create a tuple object from an iterable fronzenset(some_iterable) method; this will create a structure that has the advantage of a very fast in operator. This can be used in an application that gathers data, creates a set, and then uses that frozenset to process some other data items.

We may have a set of colors that we will use as a kind of chroma-key: we will use this color to create a mask that will be used to combine two images. Pragmatically, ...

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Functional Python Programming - Third Edition

Functional Python Programming - Third Edition

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Publisher Resources

ISBN: 9781788627061Supplemental Content