Message410607
> To a person well versed in recursion and in generator chains it makes sense but not so much for anyone else.
There I pretty much fundamentally disagree. I find the version in the docs much more magical in the sense that it builds up "laterally", i.e., level-by-level, rather than element-by-element.
Also, I think from a functional programming perspective, which, let's face it, is what these iteration/generator tools are really modelling, a recursive version is much more natural. It also generalizes nicely to other problems which people may be having -- so it has the added benefit of explaining the code and teaching people useful patterns.
Take the itertools.permutation as an example: writing that as it was in the reference implementation the code is IMHO pretty opaque and hard to reason about. Write it in a recursive style and both its working and correctness is immediately obvious.
> Plus it is hard to step through by hand to see what it is doing.
This I agree with.
Anyway, thanks for taking the time to explain the rejection. |
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Date |
User |
Action |
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2022-01-14 22:58:52 | mwallerb | set | recipients:
+ mwallerb, rhettinger, docs@python, AlexWaygood |
2022-01-14 22:58:52 | mwallerb | set | messageid: <1642201132.93.0.118008242697.issue46379@roundup.psfhosted.org> |
2022-01-14 22:58:52 | mwallerb | link | issue46379 messages |
2022-01-14 22:58:52 | mwallerb | create | |
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