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Lack of sum types is complete deal-breaker for me unfortunately.
by shpongled 3y ago
Lack of sum types is complete deal-breaker for me unfortunately.
- bheadmaster 3y agoThere's a proposal, for what it's worth: https://github.com/golang/go/issues/57644 https://github.com/golang/go/issues/57644 Although I'm curious, what is your use case that cannot be fulfilled by interfaces, but can with sum types?
- shpongled 3y ago`if err != nil` is the easiest example. Sum types allow you to express type-level OR. Structs/tuples etc are AND (product types). I like to be able to use both OR and AND at both the expression and type level.