Post

#swiftlang enums (tagged unions) are fantastic for modeling sum types in particular. But I wish Swift also had simple untagged unions: union Fruit = Apple | Orange vs enum Fruit { case .apple(Apple) case .orange(Orange) } Because tags often stand in the way of writing readable and expressive code.

In case you don't know what the f I'm talking about: docs.swift.org/swift-book/d... Again, I can only warn you about Swift beyond this one feature that I like.