Kotlin Function Support 4

KotlinFunctionalSupport4.kt

// Kotlin - currying function example

fun doCurrying(first: Int): (Int) -> ((Int, Int) -> Int) -> Int  {
  return { second -> { f -> f(first,second) } }
}

val add = { a: Int, b: Int -> a + b }
val multiply = { a: Int, b: Int -> a * b }
val minus = { a: Int, b: Int -> a - b }

val curriedFour = doCurrying(4)
val curriedFourFive = curriedFour(5)

curriedFourFive(add) // 9
curriedFourFive(multiply) // 20
curriedFourFive(minus) // -1