John Maddock wrote:
but again you may need to modify this structure during backtracking, right?
Yes, but you wouldn't have to allocate/deallocate any memory, so it's "just" some pointer fiddling. As I said though, it still adds another overhead.
I see. I agree with you that due to all these problems/overheads it is not worthwhile :-) -- +-----------------------------------------------------+ | Lorenzo Bettini ICQ# lbetto, 16080134 | | PhD in Computer Science | | Dip. Sistemi e Informatica, Univ. di Firenze | | Florence - Italy (GNU/Linux User # 158233) | | Home Page : http://www.lorenzobettini.it | | http://music.dsi.unifi.it XKlaim language | | http://www.lorenzobettini.it/purple Cover Band | | http://www.gnu.org/software/src-highlite | | http://www.gnu.org/software/gengetopt | | http://www.lorenzobettini.it/software/gengen | | http://www.lorenzobettini.it/software/doublecpp | +-----------------------------------------------------+