Contents

object Hexadecimal {
  private val hexChars  = 'a' to 'f'

  def hexToInt(s: String): Int =
    s.foldLeft(Some(0): Option[Int]){case (acc, c) => accumulate(acc, c)}.getOrElse(0)

  private def accumulate(acc: Option[Int], c: Char) =
    if (c.isDigit || (hexChars contains c.toLower))
      acc.map(x => c.asDigit + (x * 16))
    else
      None
}

Version data entries

396 entries across 396 versions & 1 rubygems

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