introducing lambda in Kotlin

Main.kt

fun main() {
    println("Experiment with lambda functions.")

    val doublePlusOne: (Int) -> Int = {x:Int-> 2 * x  + 1}
    println( doublePlusOne(3) )

    val data = (0..3).map( doublePlusOne )
    println( data::class.simpleName )
    println( data )

    val odd: (Int) -> Boolean = {it % 2 == 1}
    val samples = (0 until 16).filter(odd)
    println( samples )

    val measurements = List<Int>(12){ it * it }
    println( measurements )

    val observations = List<Int>(12){it}
    print( observations )
}