Mikhail Glukhikh
f6872dfbea
When on sealed can use is (both for derived classes and objects) or just comparison (only for derived objects). A pack of tests provided.
19 lines
439 B
Kotlin
Vendored
19 lines
439 B
Kotlin
Vendored
sealed class Sealed(val x: Int) {
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data class Tuple(val x: Int, val y: Int)
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object First: Sealed(12)
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open class NonFirst(tuple: Tuple): Sealed(tuple.x) {
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val y: Int = tuple.y
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object Second: NonFirst(Tuple(34, 2))
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object Third: NonFirst(Tuple(56, 3))
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}
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}
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fun foo(s: Sealed): Int {
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return when(s) {
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is Sealed.First -> 1
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is Sealed.NonFirst -> 0
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// no else required
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}
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}
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