Comment by wk_end
10 hours ago
I mean, you can trivially do it with a (non-G) ADT, if you're content with wrapping the return value.
OTOH you can do this in TypeScript easily without wrapping; it could return a union type `number | string`.
10 hours ago
I mean, you can trivially do it with a (non-G) ADT, if you're content with wrapping the return value.
OTOH you can do this in TypeScript easily without wrapping; it could return a union type `number | string`.
Isn't that just saying you can do dependent types in TypeScript easily so long as you're willing to give up type checking?
Actually, it's even simpler: you should just be able to use signature overloading:
The article's assertion that TypeScript can't represent this is quite false.