From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,4b06f8f15f01a568 X-Google-Attributes: gid103376,public From: Martin Dowie Subject: Re: Software landmines (was: Why C++ is successful) Date: 1998/08/26 Message-ID: #1/1 X-Deja-AN: 384959490 X-NNTP-Posting-Host: dowie-cs.demon.co.uk:193.237.34.207 References: <6rnh8p$dno$1@nnrp1.dejanews.com> <$3XHNBAxSZ41Ew4G@dowie-cs.demon.co.uk> <35E1E74D.AF98CE26@lmco.com> <35E2FC29.954D706C@lmco.com> X-Complaints-To: abuse@demon.net X-Trace: news.demon.co.uk 904149133 nnrp-02:2225 NO-IDENT dowie-cs.demon.co.uk:193.237.34.207 MIME-Version: 1.0 Newsgroups: comp.lang.ada Date: 1998-08-26T00:00:00+00:00 List-Id: In article <35E2FC29.954D706C@lmco.com>, Mark A Biggar writes >Martin Dowie wrote: >> but the data structures that 'jacksonites' refer to are >> the 'real world' ones eg. a report might consist of >> a title page, plus a contents page, plus an iteration >> of text pages plus an iteration of index pages. > >Yes but even that description may contain what are efectively pointers, >what do you think goes in the bibliography end the end of the document. >And, what is a URL but a pointer. a data structure for a biblography would be an iterations of one or more references, a reference in turn would be broken down, say in to a sequence of author plus title plus ISBN A URL is an iteration of characters, a broswer program to use this URL data structure would have an iteration of URLs as its input. "pointing" is a function, but the only data structures allowed for in JSP are sequence, selection and iteration, as jackson argues that these are the data structures found in the 'real world', and since or program design is meant to model this 'real world' he argues there is no place for a 'goto' in program design - how it's implemented is a different matter. -- Martin Dowie