fun main() { val mode = 2 val result = when (mode) { 1 -> "1 is ok" 2 -> { println("2 is fine") val i: Int = 3 "return string 2 is fine" } else -> "large than 2 is not ok" } println(result) /* * 2 is fine return string 2 is fine * */ val result2 = if (mode === 2) { true } else { false } println(result2) // true }