'unwrap envy' and exceptions

[Alexandru Ermicioi]

On Sunday, 12 September 2021 at 15:53:16 UTC, IGotD- wrote:
>
> What about the C++ approach, return values that look like 
> exceptions.
>
> You probably have already seen it.
> http://open-std.org/JTC1/SC22/WG21/docs/papers/2019/p0709r4.pdf
>
> We are allowed to "steal" from C++ if it is any good. Also it 
> can be good for interoperability.

Feels like java throws statement, except the need to handle 
exception in the function that calls throwing function.