[swift-users] Switch based on let

[Nate Birkholz]

This looks like it doesn't work (swift 2.x), but wanted to be sure it's not
supported:

class Superclass {}
class Subclass1 : Superclass {}
class Subclass2 : Superclass {}
class Subclass3 : Superclass {}

let sc1 = Subclass1()
let sc2 = Subclass2()
let sc3 = Subclass3()

let objects : [Superclass] = [sc1, sc2, sc3]

for subclassObject in objects {
    switch subclassObject {
    case let object = subclassObject as? Subclass1:
        doSomethingWith(object)
    case let object = subclassObject as? Subclass2:
        doSomethingWith(object)
    case let object = subclassObject as? Subclass3:
        doSomethingWith(object)
    default:
        return
    }
}
This gives an error, expecting a colon (:) after object on every case.

I wanted to be sure I wasn't missing something in my syntax (nor some
obvious-to-others reason this isn't supported) before going to swift
evolution.


-- 
Nate Birkholz
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