This can also be helpful if there's multiple optional parameters but you
only want to change 1 of them, so you don't have to rewrite all the
optional parameters that came before.

Since templates also allow optional arguments, is there a possibility of
adding it there too?

On Sat, Jul 6, 2019, 11:28 Jonny Grant via Std-Proposals <
std-proposals_at_[hidden]> wrote:

>
> On 06/07/2019 16:05, Arthur O'Dwyer wrote:
>
> On Sat, Jul 6, 2019 at 9:13 AM Jonny Grant via Std-Proposals <
> std-proposals_at_[hidden]> wrote:
>
>> Hello
>> My first post!
>>
>> *Parameter Names*
>>
>> Don't you just hate it when you're reading code that looks like this and
>> no idea what those parameters are ?
>>
>> func(true, false);
>>
>> This is the function declaration - but it's a pain to go and find that:
>> void func(bool debug, bool log);
>>
>> With this proposal, allowing inclusion of the parameter names makes it
>> clear:
>> func(debug=true, log=false);
>>
>
> Well, that's not much of a "proposal" at this stage. ;)
> Think about what your proposal should do with
>
> void func(int debug, int log);
> int main() {
> bool debug = false;
> func(debug=true, log=false);
> }
>
> Yes, assignment would no longer be possible. Maybe better to find another
> way to write to that doesn't reuse =
>
> I had thought to write as debug::true, buy maybe as per the proposal by
> Axel Naumann a single colon is better, ie debug:true
> http://open-std.org/JTC1/SC22/WG21/docs/papers/2018/p0671r2.html
>
>
> And think about what your proposal should do with
>
> void func(int debug, int log); // overloaded
> void func(bool log2, bool debug2); // overloaded
> int main() {
> func(debug=true, log=false);
> }
>
>
> Any exact match of the parameter names should take precedence? If they can
> be implicitly converted. log=true is an exact match on the param name, and
> can be implicitly converted.
> Looks like this is an exact match of "debug" and "log" on void func(int
> debug, int log); // overloaded
>
> So looks like I am supporting Axel's proposal :)
>
> cheers, Jonny
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>