package scalaz package syntax trait WriterOps[A] extends Ops[A] { def set[W](w: W): Writer[W, A] = WriterT.writer(w -> self) def tell: Writer[A, Unit] = WriterT.tell(self) } trait ToWriterOps { implicit def ToWriterOps[A](a: A) = new WriterOps[A]{ def self = a } }