multiPartion for non-Array collections

multiPartition

  def multiPartition[T, C[X] <: Traversable[X]](xs: C[T])(fs: T => Boolean *)(implicit cbf: CanBuildFrom[C[_],T,C[_]]) = {
    
    val builders = Vector.fill(fs.length)(cbf())
    for (e <- xs) {
      val i = fs.indexWhere(f => f(e))
      if (i >= 0) builders(i) += e
    }
    
    builders.map(_.result)
  }

  // ----------TEST---------------
  
  case class Person(val name: String, val age: Int)
  
  val people = Seq(Person("Doris", 100), Person("Barry", 60), Person("Mary", 45), Person("Justin", 16))
  
  val Seq(minors, adults, seniors) = multiPartition(people)(_.age < 18, p => 18 < p.age && p.age < 65, _.age > 65)

  println(minors mkString " ")
  println(adults mkString " ")
  println(seniors mkString " ")