Alexander Udalov
18 lines
256 B
Kotlin
18 lines
256 B
Kotlin
trait A<T> {
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fun id(t: T): T
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}
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open class B : A<String> {
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override fun id(t: String) = t
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}
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class C : B()
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class D : A<String> by C()
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fun box(): String {
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val d = D()
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if (d.id("") != "") return "Fail"
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return (d : A<String>).id("OK")
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}
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