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Postings from July 2018
On Sun, Jul 22, 2018 at 1:59 PM Deven T. Corzine <deven@ties.org> wrote: > On Wed, Jul 18, 2018 at 2:00 PM, David Nicol <davidnicol@gmail.com> wrote: > > > When exactly does the assignment happen? > > It happens immediately and should be rolled back when backtracking. > Right now, that's not happening when it should here. > how much performance impact would using a linked-list for every capture have, to facilitate the rollback? Or, to stay within perl data, use an array structure: instead of clobbering, unshift; roll back by shifting; at the very end assign from [0] elements of all internal capture arrays. Captures syntactically impossible to roll back (are there any?) would be exempt, backreferences would refer to the current [0] elt of each capture array, or the head of each capture linked-list. -- "At this point, given the limited available data, certainty about only a very small number of things can be achieved." -- Plato, and othersThread Previous | Thread Next