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paweljankowski/swift_arrays.swift

Last active March 22, 2016 18:29
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Swift arrays
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swift_arrays.swift
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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