29 February 2016

Scala or Kotlin

JVM has many language based on it, many of them are famous like Groovy, Scala, Koltin and others.

In the past I've played with Scala, now I try to post the same code snippet in Scala and in Koltin (actually koltin looks like scala in many ways):

Scala Code:

// scala

object Main {
  def main(args: Array[String]): Unit = {

    val a = 10
    val b = 50
    println(apply(a, b, { (x, y) => x * y }))
    println(apply(a, b, sum))

    val l = List(1, 3, 5)
    l map { _ * 2 } filter { _ > 4 } foreach { println(_) }
  }

  def sum(a: Int, b: Int): Int = a + b

  def apply(x: Int, y: Int, f: (Int, Int) => Int) = f(x, y)
}

Koltin Code:
// kotlin

fun main(args: Array<String>): Unit {

    val a = 10
    val b = 50
    println(apply(a, b, {x, y -> x * y}))
    println(apply(a, b, ::sum))

    val l = listOf(1, 3, 5)
    l.map { it * 2 } .filter { it > 4 } .forEach { println( it ) }
}


fun sum(a: Int, b: Int): Int = a + b

fun apply(x: Int, y: Int, f: (Int, Int)-> Int) = f(x, y)


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