swift enum pattern matching without if, guard or switch

Asked Feb 13 '18 at 18:52

Active Feb 13 '18 at 18:52

Viewed 82 times

Is there a shorter way or a oneliner to write the following?

let string: String?
if case let .someCase(temp) = someEnum {
    string = temp
} else {
    string = nil
}

It would be nice to have something like:

case let .someCase(string) = someEnum

Does this not exists or do I simply not know it?

asked Feb 13 '18 at 18:52

errnesto

2

I think the `guard case` or `if case` are as short as you can get it – Alexander Feb 13 '18 at 18:57
`if case` _is_ the short version. The long version, and the only way until `if case` came along, was a full-fledged `switch` statement. – matt Feb 13 '18 at 19:02
2

You could always add a computed property to the enum if you want; see for example https://stackoverflow.com/q/45849874/2976878 – Hamish Feb 13 '18 at 19:34
1

@Hamish: Looks like a duplicate to me. – Martin R Feb 13 '18 at 19:38

0 Answers0