4 ms·

I fail to see why you need cycles' support for that.

• mikeash 13y ago
  You asked for a situation where the lifetime of a resource can't be directly tied to the lifetime of a single storage location. Cycles are a different matter.
  • letzjuc 13y ago
    >You asked for a situation where the lifetime of a resource can't be directly tied to the lifetime of a single storage location. I don't think I asked for that but correct me if I did (maybe I'm just not understanding your point). Anyways, could you elaborate why shared_ptr, unique_ptr, and weak_ptr don't work in that case?
    • mikeash 13y ago
      Oops, wasn't you, but the OP I was responding to initially. shared_ptr works fine for my example. Shared immutable state is a case where reference counting works extremely well, since immutability implies no cycles.