Andrey Breslav
16 lines
266 B
Kotlin
16 lines
266 B
Kotlin
open class Library() {
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open fun call() : Unit {
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}
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open fun getString() : String? {
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return ""
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}
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}
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open class User() {
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open fun main() : Unit {
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var lib : Library? = Library()
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lib?.call()
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lib?.getString()?.isEmpty()
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Library().call()
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Library().getString()?.isEmpty()
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}
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} |