You can find it on issue tracker: įor “ Order of nullable operators” the correct answer is:Įlvis operator has lower precedence than + so plus is evaluated first and y lend on the right side of Elvis operator. Container implements List by delegation, and therefore, the stdlib method is used. public ponent2() is defined in kotlin-stdlib as an extension function. Private val items makes ponent2() private. Run your Kotlin code Run your Kotlin code without installing anything Using m圜ompiler, you can run your code instantly from any device. Start writing code instantly without having to download or install anything. Fiddle with your code snippets easily and run them.
Answers and explanationsįor “ Interface delegation and data classes” the correct answer is: Compile your Kotlin code using m圜ompilers online IDE. Contravariance class Wrapper val instanceVariableOne : Wrapper = Wrapper() // A val instanceVariableTwo : Wrapper = Wrapper() // BĪ) Both lines A and B compile b) Lines A and B do not compile c) Line A compiles Line B does not d) Line B compiles Line A does notĬheck out the answer and explanation using this link or by reading this article till the end.
What will it display? Some possibilities:Ĭheck out the answer and explanation using this link or by reading this article till the end. Interface delegation and data classes data class Container( val name: String, private val items: List ) : List by items fun main(args: Array)
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