Created
June 3, 2022 23:02
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if case let
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| indirect enum List<T> { | |
| case empty | |
| case node(T, List<T>) | |
| var value: T? { | |
| if case .node(let value, _) = self { | |
| return value | |
| } else { | |
| return nil | |
| } | |
| } | |
| } |
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