— Concurrency === make one task next to another task?
NapaJS adds kernel level multithreading, and combined with the concurrency you can then get parallel computing
— Hmm... think of it like this
— Functions are only partially run, then another function is partially run, and so on
— It can rapidly switch between stacks, and partially run the current function in each, but only 1 at a time can be in active execution
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— When you add multithreading from NapaJS, you then can use that technique on multiple CPU cores instead of only 1
— Concurrency is not parallelism, but it allows it to happen
— Ok. So which os the.diferrent between concurrency and promises?
— A promise is a type of control flow construct for chaining continuations, concurrency is a fundamental computer science theory
— Lets say you have 3 functions... A, B, and C... and they each contain 3 units of work each...
— If you were to run them concurrently, and fairly, they would run their work units like so:
A.1, B.1, C.1, A.2, B.2, C.2, A.3, B.3, C.3