Experience Report: 6 months of Go

Re:Experience Report: 6 months of Go by dgb23 on Monday May 02, 2022 @09:32AM (#31234887)

> Why would unions be more ergonomic than sum types? Presumably they would have the same ergonomics?

For this use case (can be a some type OR nil) they are more ergonomic because it is an actual OR, not a separate container. You want the thing as-is and handle the case where it isn't there not go through an intermediary type.

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Re:Experience Report: 6 months of Go by throwaway894345 on Monday May 02, 2022 @02:12PM (#31238697)

I'm not sure I'm following. Rust allows:

    println!("{}", if x == None { "foo" } else { "bar" });

How would unions make this more ergonomic? For example, in Python (with type annotations), you would have to do:

    print("foo" if x == None else "bar")

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