Pietro Martinelli
scala

Distances micro-DSL - the Scala version

I recently wrote about implementing in Kotlin a very simple DSL for expressing distances. Here is its Scala version:

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object Main {
    import Distance._

    def main(args: Array[String]) {
      val marathon = 42.km + 195.m + 30.cm
      println("Marathon " + marathon)
   }
}

case class Distance(val m: Double) {
    def + (that: Distance) = Distance(this.m + that.m)
}

object Distance {
    implicit class IntDistanceExtension(val value: Int) {
        def m = new Distance(value.toDouble)

        def km = new Distance(value.toDouble * 1000)

        def cm = new Distance(value.toDouble/ 100)
    }
}