> It's underspecified and thus anything can happen. > I don't know whether copying arguments should be a hard rule.
Then it's simple. The Rule should be operations without "!" at end should not destructively modify it's argument or share (part of or all of) argument's structure. (except for append and concat, I think) > It depends on the application which one is more efficient Operations without "!" at end should not affect its arguments in anyway. If performance is a issue, make a destructive version and a non-destructive version. BTW Waldek dosen't think construct! is useful. -- You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/fricas-devel. For more options, visit https://groups.google.com/d/optout.
