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| protocol Engineer: CustomStringConvertible { | |
| var team: Team { get } | |
| var canDevelopiOS: Bool { get } | |
| } | |
| extension CustomStringConvertible where Self: Engineer { | |
| var description: String { | |
| switch team { | |
| case .android: | |
| return "I belong to Android team." | |
| case .iOS: | |
| return "I belong to iOS team." | |
| } | |
| } | |
| } |
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