Scala: Boolean to Option

BooleanToOption.scala

// By extending Boolean
// See: http://docs.scala-lang.org/overviews/core/value-classes.html#extension-methods
implicit class PimpedBoolean(val self: Boolean) {
  def toOption[T](x: => T): Option[T] = if (self) Some(x) else None
}

true toOption "foox"  // => Some(foox)
true toOption {
  println("garglex")
  "foox"
}   // => Some(foox)

false toOption "fooz"  // => None
false toOption {
  println("garglez")
  "fooz"
} // => None

// By filtering
val a = true
val b = false
Some("fred") filter (_ => a)    // => Some(fred)
Some("barney") filter (_ => b)  // => None