this post was submitted on 13 Sep 2024
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Programming

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[–] [email protected] 20 points 2 months ago (5 children)

You have to explicitly check if the return value is an error and propagate it. You write the same boilerplate if (err) return err over and over again, which just litters your code.

That’s only true in crappy languages that have no concept of async workflows, monads, effects systems, etc.

Sad to see that an intentionally weak/limited language like Go is now the counterargument for good modeling of errors.

[–] [email protected] 5 points 2 months ago (2 children)

Can you please demonstrate how async workflows and monads resolve this issue?

Wouldn't effect systems still be considered exceptions, but handled differently?

[–] sukhmel 9 points 2 months ago

I don't know the answer to your question, but I think that what is needed is just a bit of syntactic sugar, e.g. Rust has ? for returning compatible errors without looking into them. That seems to be powered by Try trait, that may be a monad, but I am not fluent enough to check if it formally is.

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