Get the methods on a class / object - aka python dir()

dir.scala

// Inspired by http://stackoverflow.com/questions/2886446/how-to-get-methods-list-in-scala

def dir(x: AnyRef): Unit = println(x.getClass.getMethods.map(_.getName).distinct.sorted.mkString(" "))

scala> dir("")
charAt codePointAt codePointBefore codePointCount compareTo compareToIgnoreCase concat contains contentEquals copyValueOf endsWith equals equalsIgnoreCase format getBytes getChars getClass hashCode indexOf intern isEmpty lastIndexOf length matches notify notifyAll offsetByCodePoints regionMatches replace replaceAll replaceFirst split startsWith subSequence substring toCharArray toLowerCase toString toUpperCase trim valueOf wait

Hey sorry to bother, but why AnyRef instead of Any?