3 ms·
As much as I like Dhall, it needs unions like in typescript so we don't see `Some` littered everywhere.
by throwaway23329 4y ago
As much as I like Dhall, it needs unions like in typescript so we don't see `Some` littered everywhere.
- hither_shores 4y agoLike other forms of subtyping, unions make type inference much harder - typically undecidable. This is, of course, incompatible with guaranteed termination.