Created
September 5, 2024 23:20
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Union types. Exhaustive `match` (`switch` Java analog, `when` Kotlin analog). Without Java wrappers shit
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| @main def main(): Unit = | |
| val value1 = true | |
| val value2 = 1234L | |
| val value3 = "Hello Scala 3!" | |
| println(process(value1)) // "Received a Boolean: true" | |
| println(process(value2)) // "Received a Long: 123" | |
| println(process(value3)) // "Hello Scala 3!" | |
| type ExternalType1 = java.lang.Boolean | |
| type ExternalType2 = java.lang.Long | |
| type ExternalType3 = java.lang.String | |
| type CombinedType = ExternalType1 | ExternalType2 | ExternalType3 | |
| def process(value: CombinedType): String = value match { | |
| case n: ExternalType1 => s"Received an Boolean: $n" | |
| case s: ExternalType2 => s"Received a Long: $s" | |
| case b: ExternalType3 => b | |
| } |
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