Plan for D

[Ola Fosheim Grostad]

On Thursday, 20 May 2021 at 18:35:58 UTC, Ola Fosheim Grostad 
wrote:
> On Thursday, 20 May 2021 at 18:18:40 UTC, Paulo Pinto wrote:
>> Rust doesn't have RC, just library types, Arc/RC everywhere is 
>> just as slow as shared_ptr everywhere.
>
> @system code does not have to be @safe. Next step would be to 
> add borrowing selectively. You can also use borrowcounters 
> during testing, no need to go for static borrowing, actually.
>
>> In fact, the way that Apple got around improving ARC wasn't 
>> spending more development resources on their Objective-C/Swift 
>> compilers, rather develop a complete new CPU.
>
> D only needs atomics for shared, not comparable, as an Apple 
> engineer kindly has pointed out in this forum some years ago. 
> He did no discourage D from pursuing ARC, on the contrary.

As you can see Obj-C had some extra challenges because of 
compatibility with manual RC:

http://forum.dlang.org/post/hgmhgirfervrsvcghchw@forum.dlang.org