D array expansion and non-deterministic re-allocation

[dsimcha]

== Quote from Bartosz Milewski (bartosz-nospam at relisoft.com)'s article
> Ali Cehreli Wrote:
> > Neither 'a' nor 'b' own the elements; in that sense, if one is a slice then
the other is a slice... In D, slices have "discretionary sharing semantics." Any
slice may leave the sharing contract as it sees unfit.
> So is your answer different from that of dsimcha? I'm sitting on a fence about
it. Andrei, could you settle this issue (and a few others I raised before)?

I think the confusion stems from Ali Cehreli describing things as currently
implemented and me describing things as proposed under the MRU cache scheme.