Can't serialize std::optional in a structure

[dsiroky]

Hi!
Standalone std::optional can be serialized but once it is in a structure then the structure can't be serialized.
Example: https://godbolt.org/z/1Go4Pqqa4
The error is most likely the same as in #121.
How can I do it properly?
Thanks.

[eyalz800]

Please look in the readme that detecting number of members is not always possible - see https://godbolt.org/z/PPvqP8ozY in order to fix this, otherwise we need to wait for P1061 or reflection or some other workaround.

[dsiroky]

Thank you! Great library btw.