Dmitry Jemerov
16 lines
318 B
Plaintext
16 lines
318 B
Plaintext
open class AL<T> {
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fun get(index: Int) : T? = null
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}
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trait ALE<T> : AL<T> {
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fun getOrValue(index: Int, value : T) : T = get(index) ?: value
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}
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class SmartArrayList() : ALE<String>, AL<String> {
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}
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fun box() : String {
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val c = SmartArrayList()
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return if("239" == c.getOrValue(0, "239")) "OK" else "fail"
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}
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