[mjw]

Have to admit that has also been my reaction to some of these javascript async frameworks based on promises or deferreds. Congratulations, you've reimplemented a quirky ad-hoc variant on the continuation and error monads.

Perhaps people don't spot the link as easily because monads are usually explained in terms of a type system, and javascript is untyped? (Or perhaps just because Monad is a very abstract abstraction :)

[chousuke]

Regarding your latter point, I don't think monads are even that abstract. "Monad" just happens to be something out of category theory so it has a mathematical weird-sounding name that you MIGHT guess has something to do with monoids -- if you know what monoids are -- so people think it has to be something complicated when in practice it's just a nice unified interface for glue code.

[tel]

There's the async component as well, but I think `ErrorT e Par a` covers it.