189
The ???? operator
(programming.dev)
I found this funny.
The context is as explained by @laund@hachyderm.io
the issue is that you can't return from inside a closure, since the closure might be called later/elsewhere
and this post was the asnwer to the question by @antonok@fosstodon.org
you got me curious what the record for the longest
?operator chain on crates.io is
Original post: https://fosstodon.org/users/antonok/statuses/111134824451525448
You can also do
map_err, which is a bit cleaner while keeping the mapping obvious. If you really need to do some logic on error, extracting that to the calling function is often better.