Note that unless these lists are very big, the cost of doing the append isn't that high. If this code isn't executed a whole lot, it might not be worth trying to avoid the append. (Modern GC's are a lot better than old ones.)
-- Dan William Halliburton wrote: > Hello all, > > Does anyone have a generator that allows for iteration on multiple > lists sequentially without creating a single list. > > I'm doing this alot: > > (iter (for el in (append list1 list2 list3))) > > when the APPEND is really not necessary with a sufficiently smart > generator like: > > (iter (for el in list then list2 then list3))) > > ? > > Thank you, > Will > > _______________________________________________ > iterate-devel site list > iterate-devel@common-lisp.net > http://common-lisp.net/mailman/listinfo/iterate-devel > _______________________________________________ iterate-devel site list iterate-devel@common-lisp.net http://common-lisp.net/mailman/listinfo/iterate-devel
