exists in scala

TweetUtil.scala

object TweetUtil {

  def main(args: Array[String]) {
    val keywords = List("brown", "fox", "dog", "pangram")
    val tweet = "The quick brown fox jumps over a lazy dog. #pangram http://www.rinkworks.com/words/pangrams.shtml"

    keywords.exists(tweet.contains)
    (keywords.foldLeft(false)( _ || tweet.contains(_) ))
  }
}