RosettaCodeData/Task/Determine-if-a-string-is-numeric/Scala/determine-if-a-string-is-numeric-4.scala

def isNumeric(str: String): Boolean = {
  !throwsNumberFormatException(str.toLong) || !throwsNumberFormatException(str.toDouble)
}

def throwsNumberFormatException(f: => Any): Boolean = {
  try { f; false } catch { case e: NumberFormatException => true }
}