Or for the as/is PM proposal:

using namespace A is in(X, Y, Z)

Similar to lamda captures:

using namespace A [X, Y, Z]

But aligning a better using with other language features should take more consideration to not only have similar syntax, but real meaning and consistency.

-----Ursprüngliche Nachricht-----
Von: Sebastian Wittmeier <wittmeier@projectalpha.org>
Gesendet: Do 27.04.2023 09:48
Betreff: AW: [std-proposals] Grouped-namespace "using" statements (floating the idea)
An: std-proposals@lists.isocpp.org;

using namespace A if any_of{X, Y, Z}

 

One could see it as limitation of using namespace instead.

 

any_of loosely based on pattern matching proposals.