Contents

object PhoneNumber {
  type Parts = (String, String, String)

  private[this] val AreaCodeLength = 3
  private[this] val PrefixLength = 3
  private[this] val LineNumberLength = 4

  private[this] val PhoneNumberPattern = {
    def part(length: Int) = s"(\\d{$length})"
    s"""1?${part(AreaCodeLength)}${part(PrefixLength)}${part(LineNumberLength)}""".r
  }

  def clean(phoneNumber: String): Option[String] = {
    phoneNumber filter (_.isDigit) match {
      case PhoneNumberPattern(areaCode, prefix, lineNumber) => {
        val areaCodeFirst = areaCode.head.asDigit
        val prefixFirst = prefix.head.asDigit
        if (areaCodeFirst >= 2 && prefixFirst >= 2)
          Option(areaCode + prefix + lineNumber)
        else
          None
      }
      case _ => None
    }
  }
}

Version data entries

205 entries across 205 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.179	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.178	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.177	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.176	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.175	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.174	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.173	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.172	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.171	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.170	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.169	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.167	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.166	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.165	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.164	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.163	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.162	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.161	tracks/scala/exercises/phone-number/example.scala
trackler-2.2.1.160	tracks/scala/exercises/phone-number/example.scala