Why does in need an object parameter compared to?

gp.in<deg_F>().quantity_from_zero()

Is there a reason?
 

-----Ursprüngliche Nachricht-----
Von: Mateusz Pusz <mateusz.pusz@gmail.com>
Gesendet: Mi 19.06.2024 13:45
Betreff: Re: [std-proposals] On the standardization of mp-units P3045R1
An: std-proposals@lists.isocpp.org;
CC: Sebastian Wittmeier <wittmeier@projectalpha.org>;

While writing the answer to Ville, I realized that there is one more issue. We will have to write:

 

quantity_point qp(20 * rel_deg_C);

std::cout << qp.in(rel_deg_F).quantity_from_zero();

 

Which might be confusing for scaling quantity_point. Also, we will need to add `rel_` to Kelvins and all its prefixes for the same reason as in the other email.