gistfile1.scala

object isTriangleWord extends (String => Boolean){
  override def apply(word:String) = {
    val wordVal = wordValue(word)
    var result = false
    var i = 1
    while(triangleNumberFor(i) <= wordVal){
      if(triangleNumberFor(i) == wordVal){
        result = true
      }
       i += 1
    }
    result
  }
  private def triangleNumberFor(n:Int):Int = (n*(n+1))/2
}