What ever happened to move semantics?

[electricface]

On Thursday, 29 February 2024 at 05:51:32 UTC, electricface wrote:
> On Thursday, 29 February 2024 at 04:24:02 UTC, Walter Bright 
> wrote:
>> I do share your concern, Don. I worry that we know so well how 
>> C++ does it that we can't conceive of a better way. If we 
>> cannot do mucho better than C++ with this, why are we using D?
>>
>> D already does some things so much better than C++ by thinking 
>> "dammit there's got to be a better way than this mess!"
>>
>> Things like no ADL, decent modules, simple template syntax, 
>> easy to understand overloading, context-free grammar, slices, 
>> etc.
>
> Try using DFA technology not during normal compilation in the 
> compiler, but in an alternative checking mode that maintains 
> compilation performance while allowing program-assisted 
> analysis.

Try to linguistically mark the last usage of a variable, and then 
develop a fast verification algorithm to improve the performance 
of analyzing the last usage of variables. It can also use 
expensive but comprehensive algorithm to guide people in marking 
the last usage of a variable.