You have an enum class Signal that represents the state of a network connection. You want to print the position number of the SENDING enum. Which line of code does that?

You would like to know each time a class property is updated. Which code snippet shows a built-in delegated property that can accomplish this?

What is the correct way to initialize a nullable variable?

Which line of code is a shorter, more idiomatic version of the displayed snippet? val len: Int = if (x != null) x.length else -1

The Kotlin .. operator can be written as which function?

In this code snippet, why does the compiler not allow the value of y to change? For(y in 1..100) y+=2

You have an enum class Signal that represents the state of a network connection. You want to print the position number of the SENDING enum. Which line of code does that?