Does anyone recall the article a few months back that sort of dealt with callback hell? It was a concept from a different language (which one, I don't recall) t

Does anyone recall the article a few months back that sort of dealt with callback hell? It was a concept from a different language (which one, I don't recall) that worked basically with returning 2 values and formatting your functions according to a general model. Yes, that's a bit vague, but that's all I've got to go on. :)