rvalues->ref args

monarch_dodra via Digitalmars-d digitalmars-d at puremagic.com
Fri Sep 12 10:14:15 PDT 2014


On Friday, 12 September 2014 at 16:48:28 UTC, Dmitry Olshansky 
wrote:
> 08-Sep-2014 16:46, Manu via Digitalmars-d пишет:
>> Please can we move on a solution to this problem?
>> It's driving me insane. I can't take any more of this! >_<
>>
>> Walter invented a solution that was very popular at dconf2013. 
>> I don't
>> recall any problems emerging in post-NG-discussions.
>>
>> Ideally, we would move forward on a design for 'scope', like 
>> the
>> promising (imo) proposal that appeared recently. That would 
>> solve this
>> problem, and also many other existing safety problems, and even
>> influence solutions relating to other critical GC/performance 
>> problems.
>
>
> IMO just legalese auto ref for normal functions and you are all 
> set.
> The semantics end up to be pretty much the same as c++ const & 
> does (not duplicating the function, like current template-style 
> auto ref).

Yeah, the whole function duplication thing is pretty bad. Auto 
ref should just create a wrapper that forwards, and the 
implementation always operate on references.

With this approach in mind, auto ref for functions should be 
trivial, in thé sense that the function is compiled normally as a 
non template that takes refs, and the compiler only generates 
code/templates to capture r values.


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