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Tagged with static-typing structural-types
2
questions
11
votes
1
answer
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How can I have mutually-exclusive properties in a structural type system?
I have a structurally-typed object-oriented language, and I'd like to allow for types with some mutually-exclusive properties/attributes/slots/methods. That is, an object having more than one of these ...
- 13.1k
10
votes
1
answer
207
views
How can optional properties be made sound in a static structural type system?
Typescript's structural type system is known to be (intentionally) unsound, in the sense that the value of an expression at runtime is not always necessarily assignable to its type determined at ...
- 20k