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Zulip Chat Archive

Stream: mathlib4

Topic: custom let that registers for reduction in simp


Matthew Ballard (Feb 27 2024 at 00:26):

Given the changes to simp in core, we do want something like letR (WIP) that registers it for use in simp?

Yaël Dillies (Feb 27 2024 at 08:18):

(I fell off my chair answering this proposal, maybe a sign it would be a disrupting change) Would it be practically different from letI?


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