On Wed, 1 Nov 2023 at 09:34, Chris Gary via Std-Proposals <
std-proposals_at_[hidden]> wrote:

> Frankly, I see nothing wrong with the idea. Its really the same as "0 !=
> c.size()" or " ! c.empty()".
> With, as Arthur pointed out, the benefit of being able to instantiate
> something like a range in a conditional, just extended to containers:
>
> Ex:
>
> dlg.clearList();
> if( auto resVec = dbc.submit( query ) )
> {
> dlg.populateList( resVec );
> }
>

Why wouldn't you just write if( auto resVec = dbc.submit( query ); not
resVec.empty()) ?


> On Tue, Oct 31, 2023 at 7:54 PM Arthur O'Dwyer via Std-Proposals <
> std-proposals_at_[hidden]> wrote:
>
>> https://quuxplusone.github.io/blog/2021/12/06/views-are-boolish/
>>
>> On Tue, Oct 31, 2023 at 9:45 PM Hewill Kang via Std-Proposals <
>> std-proposals_at_[hidden]> wrote:
>>
>>> Ranges adaptors *do* provide (explicit) operator bool since they all
>>> derived from ‘view_interface’.
>>>
>>> Olaf van der Spek via Std-Proposals <std-proposals_at_[hidden]>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_at_[hidden]> 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
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