My Long Term Vision for the D programming language

[Paulo Pinto]

On Friday, 19 November 2021 at 19:02:45 UTC, Araq wrote:
> On Friday, 19 November 2021 at 17:41:23 UTC, Paulo Pinto wrote:
>> On Friday, 19 November 2021 at 15:46:15 UTC, Tejas wrote:
>>> On Friday, 19 November 2021 at 15:37:04 UTC, Paulo Pinto 
>>> wrote:
>>>> [...]
>>>
>>> What do you think about Nim's ARC + GC solution? They call it 
>>> ORC :
>>> https://nim-lang.org/blog/2020/10/15/introduction-to-arc-orc-in-nim.html
>>
>> It is an old idea that goes back to systems like Mesa/Cedar in 
>> the early 1980's.
>>
>>
>> https://archive.org/details/bitsavers_xeroxparctddingGarbageCollectionandRuntimeTypestoa_1765837
>>
>> Used to create this workstation OS at Xerox PARC,
>>
>> https://m.youtube.com/watch?v=z_dt7NG38V4
>
> Mesa/Cedar used deferred reference counting plus a cycle 
> collector, that's Nim's old default GC, ORC is completely 
> different... But hey, what do I know, I only implemented both.

Different in what way, given the optimizations referred in the 
paper and plans for future work, which unfortunately never 
realised given the team's move into Olivetti, where they 
eventually created Modula-2+ and Modula-3.