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feat: add Hashable instances for PUnit and PEmpty (#6866)

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This PR adds missing `Hashable` instances for `PUnit` and `PEmpty`.
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Jakob von Raumer 2025-02-04 15:40:31 +01:00 • committed by GitHub
parent 23bd9dfb09
commit 6d63f6305e
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src/Init/Data/Hashable.lean
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@ -22,6 +22,12 @@ instance : Hashable Bool where
| true => 11
| false => 13
instance : Hashable PEmpty.{u} where
hash x := nomatch x
instance : Hashable PUnit.{u} where
hash | .unit => 11
instance [Hashable α] : Hashable (Option α) where
hash
| none => 11