When (and under what conditions) does the "callback hell issue" manifest itself?
How does it happen?
Do asynchronous calculations and "callback hell" always go hand in hand?
Additionally, can a single-threaded programme experience "callback hell"?
Erik Meijer stated in one of his lectures for the Coursera Reactive course that RX eliminates the issue of "callback hell."
On the Coursera forum, I questioned what a "callback hell" was, but I didn't get a clear response.
Could you demonstrate how RX resolves the "callback hell problem" on that basic example after defining "callback hell" with a simple