morgen-peschke

object ExtensionMethodsOnCompanionObjects {

  implicit class ListFactoryOps(val list: List.type) extends AnyVal {
    def fizzbuzz(n: Int): List[String] =
      (0 to n).map {
        case n if n % 15 == 0 => "FizzBuzz"
        case n if n % 3  == 0 => "Fizz"
        case n if n % 5  == 0 => "Buzz"
        case n                => n.toString
      }.toList

morgen-peschke

/* Results:
| Test Name                                        | Time per round | Time in GC | Time in Benchmark |
|--------------------------------------------------+----------------+------------+-------------------|
| LinkedList Add only in front                     | 0.03 [+- 0.00] |       2.67 |              3.06 |
| LinkedList Add only in back                      | 0.03 [+- 0.01] |       2.61 |              3.01 |
| LinkedList Add in front and back                 | 0.03 [+- 0.00] |       2.66 |              3.16 |
| ArrayList  Add only in front                     | 3.83 [+- 0.06] |       0.74 |            382.93 |
| ArrayList  Add only in front with known size     | 3.87 [+- 0.05] |       0.76 |            386.71 |
| ArrayList  Add only in back                      | 0.01 [+- 0.01] |       0.69 |              0.87 |
| ArrayList  Add only in back with known size      | 0.01 [+- 0.01] |       0.76 |              0.93 |