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Sort out union subtyping #593

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milessabin opened this issue Apr 9, 2024 · 0 comments
Open

Sort out union subtyping #593

milessabin opened this issue Apr 9, 2024 · 0 comments
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@milessabin
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Currently the definition of the case(s) for unions in <:< don't implement a particularly sane subtype relation. Nonetheless the current semantics are relied on, eg. in fragmentApplies. Probably unions should only relate as subtypes to other unions and we should introduce a separate relation for fragment applicability.
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