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leanprover / lean4 Public

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Back to pull request #11578

refactor: `HashMap`/`TreeMap` and their extensional variants to use `getElem` instance #48208

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refactor: `HashMap`/`TreeMap` and their extensional variants to use `getElem` instance

refactor: `HashMap`/`TreeMap` and their extensional variants to use `getElem` instance #48208

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