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RFC: Proposal: Deterministic Object Destruction

On Friday, March 2, 2018 at 8:16:22 AM UTC, Paul Rubin wrote:[snip]
> controlling stuff like file handles
> with scopes (like with "with") is fine.

How does with work for non-trivial/composite objects that represent/reference multiple resources or even a hierarchy of such objects where all the resources held must be released in a timely fashion when finished with?