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A linked list is a reasonably common data structure, and will not be collected by a simple reference counting GC. Any data structure where child objects retain

by vkou 4y ago

A linked list is a reasonably common data structure, and will not be collected by a simple reference counting GC. Any data structure where child objects retain references to their parents (which is very common) would have this property.

KerrAvon 4y ago
Which is why reference counting systems like Apple’s ARC have explicit weak reference support.
- pjmlp 4y ago
  Which many programmers get wrong and lead to crashes, specially when they think they are clever than compiler optimizations. There is a WWDC talk about this for a reason.