[swift-dev] How does a standard collection know when its storage has to die?

[Daryle Walker]

OK, so the standard collections (Array, Set, Dictionary) are value types with remote storage. Since they don’t have de-initializers, how would any reference count get any notification to eventually de-allocate ? Or is the memory leaked? Or is some sort of secret system-provided de-initalizer added?

Just thinking of a undiscriminated union idea and wondering how to prevent this kind of leak. 

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