Kangjie Zhang

Thanks for initiating this issue @dgyurko Similar for `haven::read_xpt`, the metadata properties are kept for `class`, `format.sas`, `label`, but not for `length` and `type`

@etiennebacher @DavisVaughan @bundfussr Thank you so much for the discussion! Good to know that `all.equal()` uses relative differences, while `near` uses the absolute differences.