Talk:Decorate-sort-undecorate idiom

From Rosetta Code

Functionally Speaking

Some languages may support the task as specified with their version of the higher order function sortBy or similar. In general I think the general purpose HOF would be groupBy in functional languages.--Nigel Galloway (talk) 17:26, 31 July 2023 (UTC)

Whether the key function is cached is what makes the decorate-sort-undecorate idiom efficient in situations where the key function is an expensive calculation. Not all groupBy sorts are cached. See for example https://github.com/pandas-dev/pandas/issues/51077 --Wherrera (talk) 18:25, 31 July 2023 (UTC)

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