Dmitry Petrov
6cb0e5151c
Intrinsics for is/as/as? with mutable Kotlin collections and related types.
20 lines
567 B
Kotlin
Vendored
20 lines
567 B
Kotlin
Vendored
import java.util.ArrayList
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class MyCollection<T> : Collection<List<Iterator<T>>> {
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override fun iterator() = null!!
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override fun size(): Int = null!!
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override fun isEmpty(): Boolean = null!!
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override fun contains(o: Any?): Boolean = null!!
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override fun containsAll(c: Collection<Any?>): Boolean = null!!
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}
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fun box(): String {
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val c = MyCollection<String>() as java.util.Collection<List<Iterator<String>>>
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try {
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c.add(ArrayList())
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return "Fail"
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} catch (e: UnsupportedOperationException) {
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return "OK"
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}
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}
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