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Swift arrays
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| import Foundation | |
| protocol Foo: AnyObject { } | |
| class Bar: Foo { } | |
| let z = NSSet(array: [Bar(), Bar()]) | |
| let x = z.allObjects as? [Foo] | |
| if x != nil { | |
| print("Success") | |
| } else { | |
| print("WTF???") | |
| } |
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