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-2.2.1.139	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.138	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.137	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.136	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.135	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.134	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.133	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.132	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.131	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.130	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.129	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.128	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.127	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.126	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.125	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.124	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.123	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.122	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.121	tracks/scala/exercises/hexadecimal/example.scala
trackler-2.2.1.120	tracks/scala/exercises/hexadecimal/example.scala