Change Box dyn to Send everytime?

1

Hello,

Does it cause any harm to always have
Result<Whatever, Box<dyn Error + Send + Sync>>
vs
Result<Whatever, Box<dyn Error>>

Asking because having both sync and async code, the former always works whereas the later no.

and return Err("My error here".into()) is easy enough.
Thank you

2

Well, they are not the same, so there must logically be cases in which one is usable and the other is not. Trivially, if you always insist on Box<… + Send + Sync>, then you won't be able to construct this from errors that do not implement Send + Sync. That's usually not a problem in practice, but you do need to keep it in mind.

Incidentally, for managing custom error types, use thiserror or anyhow.

3

Thank you,

I will look into them

4

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