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,cfbb90c56a313e70 X-Google-Attributes: gid103376,public X-Google-Thread: 10261c,cfbb90c56a313e70 X-Google-Attributes: gid10261c,public From: Gautier Subject: Re: From extended Pascals to Ada 95 guide Date: 2000/08/28 Message-ID: <39AA2B85.F9A917E8@maths.unine.ch>#1/1 X-Deja-AN: 663399078 Content-Transfer-Encoding: 7bit References: <8o3s2a$9ph$1@nnrp1.deja.com> <8o4bfq$v0h$1@slb7.atl.mindspring.net> <39A655BE.18E89020@maths.unine.ch> <39A668AB.26F88375@maths.unine.ch> <39A6ABD9.634308AA@earthlink.net> X-Accept-Language: en Content-Type: text/plain; charset=us-ascii X-Trace: 28 Aug 2000 11:06:14 +0100, mac13-32.unine.ch Organization: Maths - Uni =?iso-8859-1?Q?Neuch=E2tel?= MIME-Version: 1.0 Newsgroups: comp.lang.ada,comp.lang.pascal.misc Date: 2000-08-28T00:00:00+00:00 List-Id: Marco van de Voort: > then I went a step to far, and it is plain and simple a simple type. > > type matrix33=array[1..3,1..3] of float; > > You seem not to specify the element type in Lady Byron's language. Yes, you specify it... type matrix is array(integer range <>, integer range <>) of my_float; subtype matrix33 is matrix(1..3,1..3); An expression of type matrix33 can be used as parameter for a function like ` "*"(A:matrix; v:vector) return vector; '. You could also define type matrix33 is array(1..3,1..3) of my_float; But then you lose the generality of the "matrix" type. That's the big problem of "classic" Pascal, or Modula-2: you can only program things with fixed sizes, except for variant records. ______________________________________________________ Gautier -- http://members.xoom.com/gdemont/gsoft.htm