The monad pattern is everywhere, most languages just don&#x27;t explicitly recognize it. Any non-trivial program will include many different monads; they just won&#x27;t be recognized as such in most languages.<p>For instance in C#, there is a monad with bind=?? and return=no-op (similar in use to the Maybe monad in Haskell). There&#x27;s another monad with bind=; and return=no-op (similar in use to the IO monad in Haskell). C# just doesn&#x27;t explicitly recognize those as monads.