One thing I am missing more and more in the Rust ecosystem is a set of iterators that can handle Result and Option elements. Or rather, what I need is to make decisions based on the Some/Ok-ness of those elements. For example, stop processing when an element yields a None or an Err, and then return the error.
As far as I know, currently often the best way to handle situations like this is to largely avoid the Iterator methods (e.g. map, filter) altogether in favor of for-loops. The problems with this are
that it is verbose to do (it’s not just the for-loop but also the error handling code) and
that it often requires an intermediate allocation.
Does anyone know of a crate that can help with this e.g. by reducing boilerplate and preventing the allocation?
I also didn’t immediately notice it was a link, but that’s on me for custom-theming the rust forums and then forgetting to make hyperlinks an easily recognizable color.
Having looked at them: these iterators look pretty nice, so I agree with the suggestion @juleskers made about adding them to either itertools or another crate. If it’s at all feasible for you, I encourage you to do so.