typelevel / typelevel/cats

Make `Hash.fromUniversalHashCode` null safe

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#4,831 6 comments 1 reaction 1 assignee View on GitHub

@mattjliu is already working on this.

Since May 7, 2026.

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Scala
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Description

Similarly to how Show.fromToString have been recently made null safe (#4689 and #4790), I propose making Hash.fromUniversalHashCode also null safe. Specifically, I think it should use x.## instead of x.hashCode(). (The eqv method is already fine, as it uses ==.)

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