simply, I need to run a number of transformations, each of which may return
Result - is there an elegant way of chaining them together? I thought
and_then would work but it gave weird type errors.
(I'll put together a rust playground snippet if that would be helpful?)
actually, the type errors might be more to do with the error types rather than the happy path types. I think I need to play around a little more...
The answer in these cases is usually something with
For example, something like
let uuid = Uuid::parse_str(s).map_err(|_| (StatusCode::BAD_REQUEST, "XYZ malformed"))?;.
(Also if you post code as text it makes it easier for people to copy-paste.)
It's very helpful, as it gives us play around with refactoring to show the options. (Like I recently did in Reducing the friction in the API for converting from Option to Result - #5 by scottmcm, for example.)
Either one that compiles but you wish was more elegant, or one that shows the same error you're getting is a great way to get help surprisingly quickly here, and many members of the forum like the puzzles
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