// Higher-order function as a return type fun funcGena(i: Int): (Int) -> Int = { j: Int -> j * i } // Higher-order function as a return type fun funcGenb(i: Int): (Int) -> Int = { it * i } fun funcWithInvoke(i: Int, j: Int): Int = funcGena(i).invoke(j) fun funcNoInvoke(i: Int, j: Int): Int = funcGenb(i)(j) fun main() { println(funcWithInvoke(5, 6)) println(funcWithInvoke(10, 2)) println(funcNoInvoke(20, 5)) println(funcNoInvoke(30, 3)) println(funcNoInvoke(40, 4)) }