DIP 1019--Named Arguments Lite--Community Review Round 1

[Paul Backus]

On Friday, 15 February 2019 at 19:11:55 UTC, 12345swordy wrote:
> On Friday, 15 February 2019 at 18:26:34 UTC, Yuxuan Shui wrote:
>> Yes, one of my "design goal" is to maximize my chance :)
>
> Increasing the chance of this DIP being accepted by avoiding 
> code deprecation shouldn't be any DIP design goal. We shouldn't 
> reject good design just because it may break people code.
>
> [...]
>
> D should not make the fatal mistake of "persevering backwards 
> capability at all cost" scenario, that what c++ is for.

It's actually worse than that--the purpose of @named is not to 
avoid breaking *existing* code. Existing code that doesn't use 
named arguments will continue to work regardless. The purpose of 
@named is to ensure that (a) changes to existing code which have 
yet to be made (b) do not break future code that has yet to be 
written.