Alexander Udalov
35c7c4afd8
When property initializer of some inner entity (e.g. anonymous object) contains a reference to some outer entity (say, a property of the outer class), we need to make sure we called "lookupInContext" on this entity's owner class, so that "setCaptureThis" was called on the appropriate closure #KT-4176 Fixed
30 lines
805 B
Kotlin
30 lines
805 B
Kotlin
import kotlin.support.*
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trait Stream<T> {
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fun iterator(): Iterator<T>
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}
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class ZippingStream<T1, T2>(val stream1: Stream<T1>, val stream2: Stream<T2>) : Stream<Pair<T1,T2>> {
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override fun iterator(): Iterator<Pair<T1,T2>> = object : AbstractIterator<Pair<T1,T2>>() {
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val iterator1 = stream1.iterator()
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val iterator2 = stream2.iterator()
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override fun computeNext() {
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if (iterator1.hasNext() && iterator2.hasNext()) {
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setNext(iterator1.next() to iterator2.next())
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} else {
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done()
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}
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}
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}
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}
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object EmptyStream : Stream<Nothing> {
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override fun iterator() = listOf<Nothing>().iterator()
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}
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fun box(): String {
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ZippingStream(EmptyStream, EmptyStream).iterator().hasNext()
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return "OK"
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}
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