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kotlin-fork/compiler/testData/diagnostics/tests/extensions/GenericIterator.jet
T
2012-04-09 22:31:57 +04:00

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import java.util.Enumeration
inline fun <T> java.util.Enumeration<T>.iterator() = object: Iterator<T> {
public override val hasNext: Boolean
get() = hasMoreElements()
public override fun next() = nextElement()
}
fun <T : Any> T?.iterator() = object {
var hasNext = this@iterator != null
private set
fun next() : T {
if (hasNext) {
hasNext = false
return this@iterator.sure()
}
throw java.util.NoSuchElementException()
}
}
fun main(args : Array<String>) {
val i : Int? = 1
for (x in i) {
System.out?.println(x)
}
}