Plan for D

[Ola Fosheim Grostad]

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.