I am new to learning rust.
So far my understanding is that the Option is a library feature and most related featurs of Option are possible for other enums as well.
But how does the "?" syntax work for Option being None?
e.g.
let var = some_api()?
How is the ? syntax specific to a library enum?
1 Like
The ?
operator corresponds to the Try
trait. Unfortunately it isn't stable, so unless you're using a nightly compiler you can't currently implement it for your own types.
7 Likes
Got it, so it has nothing to do with specifics of Options
It just calls few methods from the Try trait and ends up implementing the current ?
functionality that we know of
Thanks!