t.bourdenas07 at imperial.ac.uk
Thu Nov 19 18:55:26 CET 2009
On Thu, Nov 19, 2009 at 2:44 PM, Ethan Furman <ethan at stoneleaf.us> wrote:
> Please don't top post. :)
> So "shallow copy" == "new label created for existing object".
> So is your desired behavior to write back to the original list if your
> sub-list is modified? In other words, you are creating a window onto an
> existing list? If not, what would happen when a sublist element was
> modified (or deleted, or appended, or ...)?
Yes a window / view on the existing list describes it best. So every
modification you make in this view is actually modifying the original list
accordingly. Blist that was suggested in a previous email in the thread
seems lightweight but it does create a new list when a modification is made.
In any case, I've already implemented the object myself and I can post it if
you care to have a look, but I was just wondering if there was already
something in the standard library.
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