Subject: Re: [std-proposals] Proposal: template function solution to Pythonic optional function arguments
From: Richard Hodges (hodges.r_at_[hidden])
Date: 2020-07-20 09:43:15
On Mon, 20 Jul 2020 at 18:03, codusnocturnus via Std-Proposals <
> This would be great - just remove the braces, and the .âs, and the struct.
At this point it becomes an argument over syntax, rather than functional
I think what the designated initialiser demo shows is that the language is
capable of accommodating this idea.
I suspect the bigger argument will be over whether it should, given the
additional overhead of passing carrying unnecessary optionals into a
function whether it needs them or not.
I think it's common to think, "language X has a nice way of expressing Y -
why don't we do that too?"
I can be guilty of that just like anyone else.
But in the end, if a language gives you a way to *express intent*, one
might wonder whether it's worth expending effort in making syntax nicer for
niche use cases in favour of providing more utility or fixing design bugs.
> Sent from ProtonMail Mobile
> On Mon, Jul 20, 2020 at 2:10 AM, Richard Hodges via Std-Proposals <
> std-proposals_at_[hidden]> wrote:
>> Its possible something like this already exists in the latest versions of
>> C++ but if so I am not aware of it
> As of C++20, one could use designated initialisers to achieve this.
> Whether it's a good idea in C++ is another matter.
> Richard Hodges
> office: +442032898513
> home: +376841522
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-- Richard Hodges hodges.r_at_[hidden] office: +442032898513 home: +376841522 mobile: +376380212
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