[swift-evolution] Proposal: Weak Native Swift Containers

[Dmitri Gribenko]

On Thu, Dec 10, 2015 at 2:55 PM, Riley Testut via swift-evolution <
swift-evolution at swift.org> wrote:

> I think native swift collections with support for weak references for
> their contents would be very useful, and in more places than just listed
> above. I don’t think Array could be easily extended to support it (what
> happens if a value is released? does everything shift down? do they keep
> their indices?), but Set and Dictionary (where the keys and/or values could
> be weak, akin to NSMapTable) would be good candidates IMO.
>

Seems like an interesting direction to me, using value types as keys and
weak references in a dictionary-like data structure seems like a fequent
use case.  A proposal in this area should include not just the API, but
also a discussion of the implementation strategy.

Dmitri

-- 
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/
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