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-2.2.1.78	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.77	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.76	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.75	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.74	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.73	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.72	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.71	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.70	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.69	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.68	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.67	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.66	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.65	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.64	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.63	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.62	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.61	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.60	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.59	tracks/scala/exercises/hexadecimal/example.scala