Such as? The entire premise of async is that callbacks were a mistake because they broke sequential reasoning and control.
replyEvery explanation of the feature starts with managing callback hell.
Beware, they are different concepts.
replyThreads offer concurrent execution, async (futures) offer concurrent waiting. Loosely speaking, threads make sense for CPU bound problems, while async makes sense for IO bound problems.
Why? You write the same code with async await but with a keyword at the beginning of every function.
replyThe callbacks should be just hidden from programmer, that's what async/await are for.
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