From: "Matthew Heaney" <matthew_heaney@acm.org>
Subject: Re: Help me to chose between ADA 95 and C++
Date: 1999/12/14
Date: 1999-12-14T00:00:00+00:00 [thread overview]
Message-ID: <3856c969_3@news1.prserv.net> (raw)
In-Reply-To: 8363hv$6cu$1@nntp9.atl.mindspring.net
In article <8363hv$6cu$1@nntp9.atl.mindspring.net> , Richard D Riehle
<laoXhai@ix.netcom.com> wrote:
> package Real_Number is
> type Real is private;
> function "+" (L, R : Real) return Real;
> -- same for all other operators
> Divide_By_Zero : exception;
> -- more exceptions
> private
> type Real is digits 9;
> end Real_Number;
>
> The corresponding package body can have additional checks within
> each operation to ensure conformity to the application constraints.
> It turns out, though, that implementing this, in Ada, is somewhat
> tedious because of the need to avoid recursive calls within each
> function in the package body. It can be done.
Indeed it can. You have a couple of possibilities:
1) Implement the full view of the type as a record containing a single
floating point component; or,
2) Implement the full view of the type as a private derivation, and do
type conversions in the body to convert between public and private views
of the type.
next prev parent reply other threads:[~1999-12-14 0:00 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-11-26 0:00 Help me to chose between ADA 95 and C++ Robert
1999-11-26 0:00 ` Andreas Winckler
1999-11-26 0:00 ` Harald Schmidt
1999-11-26 0:00 ` Andreas Winckler
1999-11-26 0:00 ` Florian Weimer
1999-12-04 0:00 ` Richard D Riehle
[not found] ` <01bf3e32$0b9dc880$022a6282@dieppe>
1999-12-10 0:00 ` Chris Powell
1999-12-13 0:00 ` Marin D. Condic
1999-12-13 0:00 ` Richard D Riehle
1999-12-14 0:00 ` Chris Powell
1999-12-14 0:00 ` Ray Blaak
1999-12-14 0:00 ` Larry Kilgallen
1999-12-15 0:00 ` Robert A Duff
2000-01-12 0:00 ` Richard Pinkall-Pollei
1999-12-14 0:00 ` Richard D Riehle
1999-12-14 0:00 ` Matthew Heaney [this message]
1999-12-14 0:00 ` Simon Wright
1999-12-15 0:00 ` Chris Powell
1999-12-15 0:00 ` Robert A Duff
1999-12-15 0:00 ` Ted Dennison
1999-12-20 0:00 ` Stefan Skoglund
1999-12-16 0:00 ` Pascal Obry
1999-12-16 0:00 ` Rakesh Malhotra
1999-12-21 0:00 ` Geoff Bull
1999-12-16 0:00 ` Lutz Donnerhacke
1999-12-16 0:00 ` Aidan Skinner
1999-12-21 0:00 ` Robert Dewar
1999-12-21 0:00 ` Ted Dennison
1999-12-21 0:00 ` Robert Dewar
1999-12-21 0:00 ` Chris Powell
1999-12-13 0:00 ` Brian Rogoff
1999-12-14 0:00 ` Chris Powell
1999-12-14 0:00 ` Preben Randhol
1999-12-14 0:00 ` Stephen Leake
1999-12-14 0:00 ` Tucker Taft
1999-12-15 0:00 ` Stephen Leake
1999-12-15 0:00 ` Preben Randhol
1999-12-14 0:00 ` Brian Rogoff
1999-12-15 0:00 ` Richard Pinkall-Pollei
1999-12-15 0:00 ` Richard Pinkall-Pollei
1999-12-21 0:00 ` Geoff Bull
1999-12-21 0:00 ` Tucker Taft
1999-12-22 0:00 ` Ted Dennison
1999-12-13 0:00 ` DuckE
1999-12-14 0:00 ` Matthew Heaney
1999-12-14 0:00 ` Matthew Heaney
1999-12-14 0:00 ` Chris Powell
1999-12-14 0:00 ` Tucker Taft
1999-12-14 0:00 ` Matthew Heaney
1999-12-23 0:00 ` Chris Powell
1999-12-27 0:00 ` Robert A Duff
1999-12-14 0:00 ` Matthew Heaney
1999-12-15 0:00 ` Hyman Rosen
1999-12-14 0:00 ` Stephen Leake
1999-12-23 0:00 ` Chris Powell
1999-11-26 0:00 ` Preben Randhol
1999-11-26 0:00 ` Preben Randhol
1999-11-27 0:00 ` Lionel Draghi
-- strict thread matches above, loose matches on Subject: below --
1999-12-14 0:00 Robert C. Leif, Ph.D.
1999-12-15 0:00 ` Richard D Riehle
1999-12-15 0:00 Robert C. Leif, Ph.D.
1999-12-16 0:00 ` Richard D Riehle
1999-12-16 0:00 ` Matthew Heaney
1999-12-17 0:00 ` Richard D Riehle
1999-12-18 0:00 ` Matthew Heaney
1999-12-20 0:00 ` Richard D Riehle
1999-12-22 0:00 Help me to chose between ADA 95 and C++ ( Ehud Lamm
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