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I also think of "color" fundamentally as different types; it's just painful to have two kinds of functions that you can't combine. I, personally, really feel th

by Twisol 5y ago

I also think of "color" fundamentally as different types; it's just painful to have two kinds of functions that you can't combine. I, personally, really feel that async/await is just adding a second kind of continuation (promises/futures) to a language that already has a perfectly good one (call stacks), and the language ergonomics suffers for it. The reason I say functional languages don't get bit by this as bad is because functional languages rely far less on the specific notion of a call stack, and it's usually much easier to work with continuations (either via primitives like shift/reset or via syntax like do-notation).

whoisthemachine 5y ago
I struggle with this idea of "separate colors"... I see Promise returning functions as a super set of immediately returning functions... that is, any function that can return immediately could also return as a Promise (which resolved immediately), so really, the immediately returning function is just an optimization to apply when it's helpful. I'm curious why a language suffers from this explicit separation of code which "returns immediately" versus code which "returns eventually"?