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Java-friendly ADTs in Scala
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| // In Scala | |
| sealed abstract class Toggle | |
| object Toggle { | |
| private case object ON extends Toggle | |
| private case object OFF extends Toggle | |
| def On: Toggle = ON | |
| def Off: Toggle = OFF | |
| } | |
| // In Java | |
| Toggle t = Toggle.Off() | |
| Toggle t = Toggle.On() |
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