Kotlin Essential Training

Chapter 7 - Section 4

	fun main(args: Array<String>) {

		val helloWorld = {
			println("Hello world!")
		}
		helloWorld()
		helloWorld.invoke()

		val sayHello = {
				user: String, age: Int -> println("Hello, $user, you're $age years old!")
		}
		sayHello("David", 39)

		val states = arrayOf("New York", "New Hampshire", "Vermont",
			"Rhode Island", "Nebraska")
	//    val sorted = states.sortedBy { state -> state.length }
		val sorted = states.sortedBy { it.length }
			.filter { it.startsWith("n", true) }
		for (state in sorted) {
			println(state)
		}
	}