You mean "union type" where you say "sum type". AFAICT Swift does support sum ty... | Hacker News

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		Veedrac on May 10, 2018 \| parent \| context \| favorite \| on: The Logical Disaster of Null You mean "union type" where you say "sum type". AFAICT Swift does support sum types.

RX14 on May 10, 2018 [–]

yeah in crystal we call them union types. We don't have sum types so I'm not really certain on the difference.

I should have stuck to terminology I know.

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