We allow positional fields in named product types, but there's no way to select the fields without pattern matching:

type Foo(U32)

main():
    let x = Foo(123)

    let fieldValue = match x:
        Foo(x): x

We also don't have destructuring syntax, so we have to use a match just to select the fields which is verbose.

We should use the same syntax as Rust: .0, .1, ... for the positional fields.