Ranges adaptors *do* provide (explicit) operator bool since they all derived from ‘view_interface’.

Olaf van der Spek via Std-Proposals <std-proposals@lists.isocpp.org>於 2023年11月1日 週三，04:44寫道：

On Thu, Oct 19, 2023 at 12:06 PM Alex Rozenman via Std-Proposals
<std-proposals@lists.isocpp.org> wrote:
> In this message I would like to suggest to use of a bool casting operator as the most clean form of this function:

Nice suggestion. ;)

https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3509.htm


--
Olaf
--
Std-Proposals mailing list
Std-Proposals@lists.isocpp.org
https://lists.isocpp.org/mailman/listinfo.cgi/std-proposals

--
Std-Proposals mailing list
Std-Proposals@lists.isocpp.org
https://lists.isocpp.org/mailman/listinfo.cgi/std-proposals