What color is your function? (2015)

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https://seospecialistssrilanka.com/2021/09/24/website-rankin...

Two years after this article was written, async-await was introduced in Javascript as a solution to this problem. As far as I understand.

I’m thinking your reference to composing red functions doesn’t seem congruent with your desire to discuss algebraic effects. Composing arbitrarily many red functions, or blue functions, is a solved problem. (I won’t mention the lingo knowing many in the audience to be allergic.) Composing functions with heterogenous, or completely arbitrary, colors is much less so. That’s what the article is about, too, is it not - combining blue and red? But I might well be missing something deeper here, perhaps you’ll enlighten the reader :)

I would be really keen on seeing a mainstream-ish language that does algebraic effects or that can even implement them in a legitimate sense (discounting React’s implementation here, for instance). Purescript tried, but are doing something different these days. https://purescript-resources.readthedocs.io/en/latest/eff-to...

In Python at least, you can easily call an async function from a sync function:

    result = asyncio.run_until_complete(func)

Also, having explicit async/await are a wait to tell you: here are the point in your code that have something doing unreliable side effects down there.

You can then use this information to:

- move that code and group it, so you get the rest of the code sansIO style

- put that in a try/except, because this code WILL fail at some point

- think about the perfs of this part of your code, which is what you are doing async io the first place

I do wish that python coro would schedule themself automatically, like JS does, and return a future that you can await explicitly. But that ship as sailed.

Indeed, partially thanks to this article! It was the key piece of material that helped me convince Andrew to make zig's async colour-less.