20-Jan-2014 23:48, Steven Schveighoffer пишет:
On Mon, 20 Jan 2014 11:35:10 -0500, Dmitry Olshansky
<[email protected]> wrote:
19-Jan-2014 20:18, monarch_dodra пишет:
My usecase is pretty trivial: A linked list. This is often implemented
as a "single" sentinel that serves as both pre-head/post-tail. When the
list is empty, the sentinel simply points to itself.
You could use internal pointers for this case as long as:
a) The struct will never get copied and/or moved. No pass by value,
only pointers.
b) It's out of GC control and in particular GC-allocated built-in arrays.
I think this is somewhat too general. It can be GC allocated, even
GC-array allocated. The GC will not move around your array unexpectedly
without updating the pointers.
But a moving collector will happily assume there are no internal
pointers when moving and won't update them I bet.
--
Dmitry Olshansky
