Toolz: A functional standard library for Python

Re:Toolz: A functional standard library for Python by AlexCoventry on Thursday January 21, 2021 @02:29PM (#25863045)

Also by the lack of persistent data structures with structural sharing. That forces you to take an expensive copy whenever you want a modified version of some data, or bash it in place.

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Re:Toolz: A functional standard library for Python by heavyset_go on Thursday January 21, 2021 @02:49PM (#25863267)

There's Pyrsistent[1], which provides persistent data structures.

[1] https://github.com/tobgu/pyrsistent

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Re:Toolz: A functional standard library for Python by Iwan-Zotow on Thursday January 21, 2021 @02:34PM (#25863099)

Isn't it a true functional way?

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Re:Toolz: A functional standard library for Python by alentist on Thursday January 21, 2021 @04:36PM (#25864612)

There are smarter ways to deal with data structures in the functional setting than copying the entire structure over and over again.

See https://en.wikipedia.org/wiki/Purely_functional_data_structu... and Okasaki’s book Purely Functional Data Structures.

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Re:Toolz: A functional standard library for Python by iimblack on Thursday January 21, 2021 @04:13PM (#25864311)

I could definitely be wrong but I think most functional data structures aren’t fully copied. Instead, they’ll utilize something like a pointer to the data that stayed the same so only the part that changes is “copied”.

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