Jinseong Jeon
27 lines
520 B
Kotlin
Vendored
27 lines
520 B
Kotlin
Vendored
interface MyIterator<T> {
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operator fun hasNext() : Boolean
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operator fun next() : T
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}
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operator fun <T : Any> T?.iterator() = object : MyIterator<T> {
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private var hasNext = this@iterator != null
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override fun hasNext() = hasNext
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override fun next() : T {
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if (hasNext) {
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hasNext = false
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return this@iterator!!
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}
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throw NoSuchElementException()
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}
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}
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fun box() : String {
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var k = 0
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for (i in 1) {
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k++
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}
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return if(k == 1) "OK" else "fail"
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}
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