Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!lavaca.uh.edu!menudo.uh.edu!sugar!ficc!peter From: peter@ficc.ferranti.com (Peter da Silva) Newsgroups: comp.lang.misc Subject: Re: Some things that pointer-less languages can't do efficiently Message-ID: Date: 8 Nov 90 17:26:37 GMT References: <26739:Oct1023:44:2690@kramden.acf.nyu.edu> <65450@lanl.gov> <10397:Oct1212:55:1090@kramden.acf.nyu.edu> <3975@goanna.cs.rmit.oz.au> <3716@skye.ed.ac.uk> Reply-To: peter@ficc.ferranti.com (Peter da Silva) Organization: Xenix Support, FICC Lines: 8 In article <3716@skye.ed.ac.uk> jeff@aiai.UUCP (Jeff Dalton) writes: > Another sense, perhaps more relevant to the present discussion, is > that in Lisp & Scheme there's no way to get a pointer to the middle > of a structure. You can't have a pointer to the cdr of a list... (setq a '(foo (bar baz))) (setq b (cdr a)) (rplaca b 'bog) -- Peter da Silva. `-_-' Professional computer nerd, second class. +1 713 274 5180. 'U` Gallery Furniture really will SAVE YOU MONEY! peter@ferranti.com (Have you hugged your wolf today?)