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Created October 5, 2015 06:10
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Hashable CFString in Swift
import Foundation
// Allows Set<CFString> and switch statements of CFString values.
extension CFString: Hashable {
public var hashValue: Int { return Int(CFHash(self)) }
// Second requirement of conforming to Hashable.
public func ==(lhs: CFString, rhs: CFString) -> Bool {
return CFStringCompare(lhs, rhs, CFStringCompareFlags()) == .CompareEqualTo
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