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-2.2.1.98	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.97	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.96	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.95	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.94	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.93	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.92	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.91	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.90	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.89	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.88	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.87	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.86	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.85	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.84	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.83	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.82	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.81	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.80	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.79	tracks/scala/exercises/hexadecimal/example.scala