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22 lines
397 B
Plaintext
22 lines
397 B
Plaintext
trait AL {
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fun get(index: Int) : Any? = null
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}
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trait ALE<T> : AL {
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fun getOrNull(index: Int, value: T) : T {
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val r = get(index) as? T
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return r ?: value
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}
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}
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open class SmartArrayList() : ALE<String> {
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}
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class SmartArrayList2() : SmartArrayList(), AL {
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}
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fun box() : String {
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val c = SmartArrayList2()
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return if("239" == c.getOrNull(0, "239")) "OK" else "fail"
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}
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