feat: prove xs.extract start stop = (xs.take stop).drop start for lists#12359
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feat: prove xs.extract start stop = (xs.take stop).drop start for lists#12359
xs.extract start stop = (xs.take stop).drop start for lists#12359Conversation
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This PR deprecates
extract_eq_drop_takein favor of the more correct nameextract_eq_take_drop, so that we'll be able to use the old name for a lemmaxs.extract start stop = (xs.take stop).drop start. Until the deprecation deadline has passed, this new lemma will be calledextract_eq_drop_take'.