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  1. Prepare
  2. Functional Programming
  3. Introduction
  4. Filter Array
  5. Discussions

Filter Array

  • phillipraywood
     + 0 comments

    Scala

    def checkHeadLessThanDelim(delim: Int, head: Int, result: List[Int]
                          ): List[Int] = {
    if (head < delim) {
        result :+ head
    } else {
        result
    }
}

def f(delim: Int, arr: List[Int], result: List[Int] = List(),
     headChecker: (Int, Int, List[Int]) => List[Int] = checkHeadLessThanDelim
     ): List[Int] = {
    if (arr.size > 0) {
        f(delim, arr.tail, headChecker(delim, arr.head, result))
    } else {
        result
    }
}