Assignment not allowed in while expression?

Question

In Java we can usually perform an assignment within the while condition. However Kotlin complains about it. So the following code does not compile:

Answer 1

No, the best way, IMO, would be

val reader = BufferedReader(reader)
reader.lineSequence().forEach {
    println(it)
}

And if you want to make sure the reader is properly closed (as you would with a try-with-resources statement in Java), you can use

BufferedReader(reader).use { r ->
    r.lineSequence().forEach {
        println(it)
    }
}