Regression in Set with Swift 5.5

Using Swift
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19

That would be an excellent idea! Are you volunteering to write it up?

So right now we have:

  • Sequence.sorted(), .sorted(by:), MutableCollection.sort(), .sort(by:) should document that the sort algorithm is stable. (Starting from Swift x.y)
  • Set.union(_:), Set.intersection(_:), and Set.formIntersection(_:) (all overloads) should document that members of the result that appear in both inputs are taken from self. (Interestingly, formUnion already has this guarantee.) (Starting from Swift 5.6)

Anything else?

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