Igor Yakovlev
39 lines
699 B
Kotlin
Vendored
39 lines
699 B
Kotlin
Vendored
interface I<T> {
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val prop: T
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fun f(x: String = "1"): String
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fun g(x: String = "2"): String
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fun h(x: T = prop): T
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}
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open class A<T> {
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open fun f(x: String) = x
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open fun g(x: T) = x
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open fun h(x: String) = x
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}
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class B : A<String>(), I<String> {
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override val prop
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get() = "3"
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}
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fun box(): String {
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val i: I<String> = B()
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var result = i.f() + i.g() + i.h()
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if (result != "123") return "fail1: $result"
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val b = B()
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result = b.f() + b.g() + b.h()
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if (result != "123") return "fail2: $result"
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val a: A<String> = B()
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result = a.f("q") + a.g("w") + a.h("e")
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if (result != "qwe") return "fail3: $result"
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return "OK"
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}
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