| protocol IntMaker {} | |
| extension IntMaker { | |
| func make() -> Int { return 0 } | |
| } | |
| protocol DoubleMaker {} | |
| extension DoubleMaker { | |
| func make() -> Double { return 0 } | |
| } | |
| #if OLD | |
| typealias InterestingType = Int | |
| typealias InterestingProto = IntMaker | |
| #elseif NEW | |
| typealias InterestingType = Double | |
| typealias InterestingProto = DoubleMaker | |
| #else | |
| typealias InterestingType = ErrorMustSetOLDOrNew | |
| #endif |