No
7> switch str {
8. case "foo": print("case foo")
9. case .none: print("(nil)")
10. }
error: repl.swift:8:6: error: value of optional type 'String?' not unwrapped;
did you mean to use '!' or '?'?
case "foo": print("case foo")
^
!
Odd error, but at least it suggests it’s an issue with optionaity.
> On Jun 28, 2016, at 9:27 AM, Nevin Brackett-Rozinsky
> <nevin.brackettrozin...@gmail.com> wrote:
>
> Does `case "text"?` work?
>
>
> On Tuesday, June 28, 2016, Kevin Nattinger via swift-evolution
> <swift-evolution@swift.org> wrote:
> Case .none:
> Case .some("string"):
>
>
> On Jun 28, 2016, at 06:40, Lucas Jordan via swift-evolution
> <swift-evolution@swift.org> wrote:
>
>> Forgive me if this was/is discussed already, I am new to the process here....
>>
>> (code is attached as a playground too)
>>
>>
>>
>> Sometimes when I am working with a String? nil can be a reasonable value,
>> and what I want to do is something like the following:
>>
>> import UIKit
>>
>>
>>
>> var str:String? = "Hello, playground"
>>
>>
>>
>> switch str{
>>
>> case nil:
>>
>> print("Nil!")
>>
>> case "Hello, playground": //it would be super nice if this worked.
>>
>> print("Match")
>>
>> default:
>>
>> print("Some other non nil value?")
>>
>> }
>>
>>
>>
>> But it does not work, the orange text is a compile time error, "Expression
>> pattern of type 'String' cannot match value of type 'String?'. I realize
>> that this can be replaced with a let statement (case let s where s ==
>> "Hello, playground":), but that is verbose.
>>
>> Seems like the compiler could be OK with the orange text, since it is
>> clearly not nil.
>>
>> Thoughts?
>>
>> -Lucas
>>
>>
>>
>>
>>
>> <NilInSwitchStatements.playground.zip>
>> _______________________________________________
>> swift-evolution mailing list
>> swift-evolution@swift.org
>> https://lists.swift.org/mailman/listinfo/swift-evolution
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