alt Hacker NewsTo be fair Rust doesn't have sum type it has enums, which I feel like you could do in Go, but I haven't read the arguments.
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9rx • last Tuesday at 5:51 PM
Technically, Rust has sum types (a.k.a. tagged unions) that use an enum to generate the tag. So, while enumeration is involved, sum types is still a better description of what it is.
Enum is what they call it (perhaps to appear more familiar to C++ programmers?), but from a computer science standpoint they are classic sum types.