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=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,9245b8db9abd376c X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-04-16 01:49:01 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!kibo.news.demon.net!news.demon.co.uk!demon!pipehawk.demon.co.uk!not-for-mail From: john.mccabe@emrad.ns.com (John McCabe) Newsgroups: comp.lang.ada Subject: Re: Out parameters in a function Date: Tue, 16 Apr 2002 08:49:44 GMT Organization: Emrad Ltd Message-ID: <3cbbe583.3628858@news.demon.co.uk> References: <4519e058.0204150709.55c94dfb@posting.google.com> NNTP-Posting-Host: pipehawk.demon.co.uk X-NNTP-Posting-Host: pipehawk.demon.co.uk:158.152.226.81 X-Trace: news.demon.co.uk 1018946900 nnrp-13:21363 NO-IDENT pipehawk.demon.co.uk:158.152.226.81 X-Complaints-To: abuse@demon.net X-Newsreader: Forte Free Agent 1.21/32.243 Xref: archiver1.google.com comp.lang.ada:22591 Date: 2002-04-16T08:49:44+00:00 List-Id: On 15 Apr 2002 08:09:24 -0700, dennison@telepath.com (Ted Dennison) wrote: >"Nazgul" wrote in message news:... >> function ReadChar(f: File; c: out character) return boolean; >> >> The function must return a boolean, so the only way to read the character is >> via the 'c' parameter. In other context, I use >... >> Is there any way of using c as an output parameter? > >No. In Ada functions take multiple "in" parameters, and return only >one value via the "return" machanisim. If you have multiple values you >need to return, you should be using a procedure, not a function. Unfortunate that they didn't follow the Occam example of having a function capable of returning multiple values!