Count the smiley faces!

My:
object Kata {
  def countSmileys(l: Vector[String]):Int={
  l.map(x => x.replaceAll("[;:][~-]?[)D]", "T")).count(x => x == "T")
  }
}

Other:
object Kata {
  def countSmileys(strings: Vector[String]): Int =
    strings.count(_.matches("[:;][-~]?[)D]"))
}