From: mheaney@ni.net (Matthew Heaney)
Subject: Precondition Checking For Ada 0X (Was: Separation of IF and Imp: process issue?)
Date: 1997/09/10
Date: 1997-09-10T00:00:00+00:00 [thread overview]
Message-ID: <mheaney-ya023680001009971956580001@news.ni.net> (raw)
In-Reply-To: 3416D889.4A6C@pseserv3.fw.hac.com
In article <3416D889.4A6C@pseserv3.fw.hac.com>, "W. Wesley Groleau x4923"
<wwgrol@pseserv3.fw.hac.com> wrote:
>I claimed before (perhaps wrongly) that adding assertions to Ada
>seemed fairly trivial, but even if correct, there is one aspect
>that would NOT be trivial. Since an Eiffel-style assertion is
>part of the contract, BUT it is executed when a routine is called,
>how can it be put in an Ada spec in a form that is compilable AND
>associated with a particular declaration?
You'd probably have to change the syntax of subprogram declarations.
Here's an example:
type Root_Stack is abstract tagged private;
function Empty (Stack : Root_Stack) return Boolean;
function Full (Stack : Root_Stack) return Boolean;
procedure Pop
(Stack : in out Root_Stack)
precondition
Not_Empty: not Empty (Stack);
end Pop;
function Top
(Stack : Root_Stack) return Stack_Item
precondition
Not_Empty: not Empty (Stack);
end Top;
procedure Push
(Item : in Stack_Item;
On : in out Root_Stack)
precondition
Not_Full: not Full (On);
end Push;
or consider a sequence abstraction:
type Root_Sequence is abstract tagged private;
function Length
(Sequence : Root_Sequence) return Natural;
procedure Remove_Item
(Sequence : in out Root_Sequence;
Index : in Positive)
precondition
Is_Present: Index <= Length (Sequence);
end;
You get the idea. The subprogram precondition is a list of boolean
expressions that are functions of one or more of the subprogram arguments.
The precondition (and postcondition too - I didn't show that) is part of
the signiture of the subprogram.
When the call happens, the actual parameters are calculated, and then the
preconditions are evaluated; a precondition violation (a boolean expression
whose value is False) would cause Constraint_Error to be raised (or
whatever), just as for actual parameters that don't satisify range
constraints of the formal parameters.
A simple example of a postcondition would be
function Length
(Sequence : Root_Sequence) return Integer
postcondition
Length >= 0;
end;
(though of course this example is possible using existing Ada mechanisms).
I still have to think about how to state a representation invariant. Its
specification would somehow have to be attached to the full view of the
type, and would be evaluated at exit from a subprogram.
I also haven't thought of a convenient way to state a postcondition in
terms of a change in a value (ie the length before the call versus the
length after the call).
This is my first cut at an extended syntax for Ada 0X. Any opinions?
--------------------------------------------------------------------
Matthew Heaney
Software Development Consultant
<mailto:matthew_heaney@acm.org>
(818) 985-1271
next prev parent reply other threads:[~1997-09-10 0:00 UTC|newest]
Thread overview: 562+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <33957A33.1C31AB44@oma.com>
[not found] ` <865898351snz@nezumi.demon.co.uk>
[not found] ` <339ED54C.215A5F85@oma.com>
[not found] ` <5noc8u$a8m$3@miranda.gmrc.gecm.com>
[not found] ` <33A032AC.2D8BA85C@oma.com>
[not found] ` <5nrn86$cvo$3@miranda.gmrc.gecm.com>
[not found] ` <33A1CBBB.B0602EC@oma.com>
[not found] ` <5o2uls$ku3$2@miranda.gmrc.gecm.com>
[not found] ` <33A6ADDA.2099EEB9@oma.com>
[not found] ` <EBxM3y.8Eo@i2.COM>
[not found] ` <33A7D2DE.545B@polaroid.com>
[not found] ` <JSA.97Jun18155730@alexandria.organon.com>
1997-06-19 0:00 ` Is ADA as good for graphics programming as C? (WAS: Re: Avoiding the second historic mistake) Mukesh Prasad
1997-06-19 0:00 ` Is Ada " Jon S Anthony
1997-06-19 0:00 ` Is ADA " Steve Jones - JON
1997-06-19 0:00 ` Mukesh Prasad
1997-06-20 0:00 ` Robert Dewar
1997-06-22 0:00 ` Is ADA as good for graphics programming as C? (WAS: Jerry van Dijk
1997-06-21 0:00 ` Is ADA as good for graphics programming as C? (WAS: Re: Avoiding the second historic mistake) Tim Harrison
1997-06-23 0:00 ` Kaz Kylheku
1997-06-24 0:00 ` John Goodsen
1997-06-25 0:00 ` Michael Levasseur
1997-06-26 0:00 ` Chris Brand
1997-07-02 0:00 ` Matthew Heaney
1997-07-03 0:00 ` Donovan Baarda
1997-07-04 0:00 ` Matthew Heaney
1997-07-04 0:00 ` Donovan Baarda
1997-07-04 0:00 ` Brian Rogoff
1997-07-07 0:00 ` Donovan Baarda
1997-07-08 0:00 ` Joachim Durchholz
1997-07-08 0:00 ` Brian Rogoff
1997-07-09 0:00 ` Don Harrison
1997-07-05 0:00 ` Jon S Anthony
1997-07-07 0:00 ` Donovan Baarda
1997-07-08 0:00 ` Canada Bass
1997-07-08 0:00 ` Dale Pontius
1997-07-08 0:00 ` Martin Tom Brown
1997-07-09 0:00 ` Matthew Heaney
1997-07-10 0:00 ` Nick Leaton
1997-07-10 0:00 ` Matthew Heaney
1997-07-11 0:00 ` Nick Leaton
1997-07-14 0:00 ` Don Harrison
1997-07-15 0:00 ` Matthew Heaney
1997-07-15 0:00 ` Brian Rogoff
1997-07-16 0:00 ` Don Harrison
1997-07-17 0:00 ` Matthew Heaney
1997-07-18 0:00 ` Composition vs. Inheritance (was Re: Is ADA as good for graphics programming as C?) Robert I. Eachus
1997-07-19 0:00 ` Is ADA as good for graphics programming as C? (WAS: Re: Avoiding the second historic mistake) Nasser
1997-07-20 0:00 ` Brian Rogoff
1997-07-21 0:00 ` Andrew Dunstan
1997-07-21 0:00 ` Jon S Anthony
1997-07-21 0:00 ` Jon S Anthony
[not found] ` <01bc94e1$46912100$53aa20cc@default>
1997-07-20 0:00 ` Is ADA as good for graphics programming as C? Matthew Heaney
1997-07-21 0:00 ` Dennis Weldy
1997-07-21 0:00 ` Jon S Anthony
1997-07-21 0:00 ` Is ADA as good for graphics programming as C? (WAS: Re: Avoiding the second historic mistake) Robert C. Martin
1997-07-22 0:00 ` Relative complexity - Eiffel and Ada Don Harrison
1997-07-15 0:00 ` Is ADA as good for graphics programming as C? (WAS: Re: Avoiding the second historic mistake) Jon S Anthony
1997-07-15 0:00 ` Don Harrison
1997-07-15 0:00 ` Jon S Anthony
1997-07-15 0:00 ` Robert I. Eachus
1997-07-05 0:00 ` John Nagle
1997-07-09 0:00 ` Don Harrison
1997-07-09 0:00 ` Tucker Taft
1997-07-10 0:00 ` Safety-critical development in Ada and Eiffel Don Harrison
1997-07-10 0:00 ` Joe Gwinn
1997-07-11 0:00 ` Robert S. White
1997-07-15 0:00 ` Don Harrison
1997-07-15 0:00 ` Ken Garlington
1997-07-16 0:00 ` Don Harrison
1997-07-10 0:00 ` Ken Garlington
1997-07-11 0:00 ` Ted Velkoff
1997-07-12 0:00 ` Ken Garlington
1997-07-13 0:00 ` Jon S Anthony
1997-07-14 0:00 ` Wes Groleau
1997-07-15 0:00 ` Jon S Anthony
1997-07-15 0:00 ` Don Harrison
1997-07-15 0:00 ` Ken Garlington
1997-07-16 0:00 ` Paul Johnson
1997-07-16 0:00 ` Ken Garlington
1997-07-17 0:00 ` Paul Johnson
1997-07-17 0:00 ` Ken Garlington
1997-07-18 0:00 ` Paul Johnson
1997-07-18 0:00 ` Ken Garlington
1997-07-21 0:00 ` Paul Johnson
1997-07-18 0:00 ` Jon S Anthony
1997-07-17 0:00 ` Jon S Anthony
[not found] ` <EDHqKo.K52@world.std.com>
1997-07-18 0:00 ` Jon S Anthony
1997-07-19 0:00 ` Robert A Duff
1997-07-20 0:00 ` Tucker Taft
1997-07-10 0:00 ` Mike Stark
1997-07-11 0:00 ` Donovan Baarda
1997-07-13 0:00 ` Steve Furlong
1997-07-16 0:00 ` Joachim Durchholz
1997-07-17 0:00 ` Ken Garlington
1997-07-17 0:00 ` Robert Dewar
1997-07-18 0:00 ` Jon S Anthony
1997-07-18 0:00 ` Nick Leaton
1997-07-18 0:00 ` Jon S Anthony
1997-07-18 0:00 ` John Nagle
1997-07-18 0:00 ` Jon S Anthony
1997-07-11 0:00 ` Don Harrison
1997-07-11 0:00 ` James Graves
1997-07-14 0:00 ` Don Harrison
1997-07-12 0:00 ` Ken Garlington
1997-07-15 0:00 ` Don Harrison
1997-07-15 0:00 ` Wes Groleau
1997-07-15 0:00 ` Ken Garlington
1997-07-16 0:00 ` Don Harrison
1997-07-16 0:00 ` Ken Garlington
1997-07-16 0:00 ` Robert Dewar
1997-07-17 0:00 ` Paul Johnson
1997-07-17 0:00 ` Stuart Palin
1997-07-18 0:00 ` Ian Rae
1997-07-18 0:00 ` Paul Johnson
1997-07-17 0:00 ` Jon S Anthony
1997-07-18 0:00 ` Joachim Durchholz
1997-07-18 0:00 ` Don Harrison
1997-07-20 0:00 ` Don Harrison
1997-07-18 0:00 ` Robert I. Eachus
1997-07-21 0:00 ` W. Wesley Groleau x4923
1997-07-15 0:00 ` Ken Garlington
1997-07-16 0:00 ` Jean-Marc Jezequel
1997-07-16 0:00 ` Ken Garlington
1997-07-17 0:00 ` "Paul E. Bennett"
1997-07-17 0:00 ` Robert Dewar
1997-07-17 0:00 ` The stupidity of all the Ariane 5 analysts Thaddeus L. Olczyk
[not found] ` <33CEAF05.6389@flash.net>
1997-07-20 0:00 ` Bertrand Meyer
1997-07-21 0:00 ` Ken Garlington
1997-07-31 0:00 ` Al Christians
1997-08-01 0:00 ` "Paul E. Bennett"
1997-08-01 0:00 ` Ken Garlington
1997-07-21 0:00 ` Robert S. White
1997-07-21 0:00 ` Robert Dewar
1997-07-21 0:00 ` The presuppositions " Samuel Mize
1997-07-21 0:00 ` Ken Garlington
1997-07-22 0:00 ` Luther Hampton
1997-07-23 0:00 ` Samuel Mize
1997-07-23 0:00 ` Ken Garlington
1997-07-21 0:00 ` The stupidity " Ken Garlington
1997-07-23 0:00 ` Robert S. White
1997-07-23 0:00 ` Ken Garlington
1997-07-25 0:00 ` Robert S. White
1997-07-23 0:00 ` Robert Dewar
1997-07-24 0:00 ` Ken Garlington
1997-07-29 0:00 ` Shmuel (Seymour J.) Metz
1997-07-31 0:00 ` Robert Dewar
1997-08-01 0:00 ` Shmuel (Seymour J.) Metz
1997-08-04 0:00 ` Larry Kilgallen
1997-07-31 0:00 ` Warts was " Richard Irvine
1997-07-31 0:00 ` Robert Dewar
1997-08-05 0:00 ` Shmuel (Seymour J.) Metz
[not found] ` <5scqlr$ju@news.sei.cmu.edu>
1997-08-07 0:00 ` Brian Rogoff
1997-08-08 0:00 ` Jon S Anthony
1997-08-08 0:00 ` Brian Rogoff
1997-08-10 0:00 ` Matthew Heaney
1997-08-10 0:00 ` Brian Rogoff
1997-08-19 0:00 ` Shmuel (Seymour J.) Metz
[not found] ` <Pine.SGI.3.95.970807191944.13419A-100000@shellx <JSA.97Aug8161709@alexandria.organon.com>
1997-08-08 0:00 ` Robert A Duff
1997-08-11 0:00 ` Jon S Anthony
1997-08-08 0:00 ` Don Harrison
1997-08-11 0:00 ` Shmuel (Seymour J.) Metz
1997-07-25 0:00 ` Ariane 5,Eiffel, Ada Alan Brain
1997-07-22 0:00 ` The stupidity of all the Ariane 5 analysts W. Wesley Groleau x4923
1997-07-21 0:00 ` Ian Begg
1997-07-21 0:00 ` Usefullness of design-by-contract (was Re: The stupidity of all the Ariane 5 analysts.) Jim Cochrane
1997-07-22 0:00 ` Jon S Anthony
1997-07-22 0:00 ` Ken Garlington
1997-07-23 0:00 ` The stupidity of all the Ariane 5 analysts Joerg Rodemann
1997-07-18 0:00 ` Safety-critical development in Ada and Eiffel - Ariane crash Joachim Durchholz
1997-07-18 0:00 ` Ken Garlington
1997-07-17 0:00 ` Safety-critical development in Ada and Eiffel Joachim Durchholz
1997-07-19 0:00 ` Ken Garlington
1997-07-21 0:00 ` Ada vs Eiffel (was: Safety-critical development in ...) W. Wesley Groleau x4923
1997-07-22 0:00 ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-07-21 0:00 ` Safety-critical development in Ada and Eiffel Robert S. White
1997-07-20 0:00 ` nabbasi
1997-07-21 0:00 ` W. Wesley Groleau x4923
1997-07-18 0:00 ` Don Harrison
1997-07-18 0:00 ` Ken Garlington
1997-07-22 0:00 ` Don Harrison
1997-07-21 0:00 ` Ken Garlington
1997-07-23 0:00 ` Don Harrison
1997-07-23 0:00 ` Ken Garlington
1997-07-25 0:00 ` Don Harrison
1997-07-23 0:00 ` W. Wesley Groleau x4923
1997-07-24 0:00 ` Don Harrison
1997-07-24 0:00 ` Ken Garlington
1997-07-26 0:00 ` Joachim Durchholz
1997-07-31 0:00 ` Ken Garlington
1997-07-28 0:00 ` Nick Leaton
1997-07-28 0:00 ` Steve Jones - JON
1997-07-31 0:00 ` Ken Garlington
1997-07-29 0:00 ` Don Harrison
1997-07-31 0:00 ` Ken Garlington
1997-08-07 0:00 ` Don Harrison
1997-08-07 0:00 ` Ken Garlington
1997-08-09 0:00 ` Jim Cochrane
1997-08-11 0:00 ` Paul Johnson
1997-08-11 0:00 ` Ken Garlington
1997-08-12 0:00 ` Mark A Biggar
1997-08-19 0:00 ` Robert Dewar
1997-08-19 0:00 ` Bertrand Meyer
1997-08-19 0:00 ` Robert Dewar
1997-08-20 0:00 ` Lee Webber
1997-08-21 0:00 ` Don Harrison
1997-08-23 0:00 ` Ken Garlington
1997-08-20 0:00 ` Nick Leaton
1997-08-21 0:00 ` Joachim Durchholz
1997-08-21 0:00 ` Jon S Anthony
1997-08-22 0:00 ` Nick Leaton
1997-08-19 0:00 ` Nick Leaton
1997-08-20 0:00 ` Ken Garlington
1997-08-26 0:00 ` Richard A. O'Keefe
1997-08-13 0:00 ` Paul Johnson
1997-08-13 0:00 ` Ken Garlington
1997-08-15 0:00 ` Paul Johnson
1997-08-15 0:00 ` Ken Garlington
1997-08-18 0:00 ` Joachim Durchholz
1997-08-19 0:00 ` Ken Garlington
1997-08-20 0:00 ` Nick Leaton
1997-08-20 0:00 ` Nasser
1997-08-21 0:00 ` Jon S Anthony
1997-08-22 0:00 ` Nick Leaton
1997-08-23 0:00 ` Ken Garlington
1997-08-21 0:00 ` Joachim Durchholz
1997-08-23 0:00 ` Ken Garlington
1997-08-12 0:00 ` Don Harrison
1997-08-12 0:00 ` Jon S Anthony
1997-08-13 0:00 ` Don Harrison
1997-08-13 0:00 ` Samuel Mize
1997-08-13 0:00 ` Robert A Duff
1997-08-14 0:00 ` Jon S Anthony
1997-08-15 0:00 ` Don Harrison
1997-08-16 0:00 ` Ken Garlington
1997-08-13 0:00 ` Jon S Anthony
1997-08-15 0:00 ` Don Harrison
1997-08-16 0:00 ` Jon S Anthony
1997-08-13 0:00 ` Ted Velkoff
1997-08-13 0:00 ` Jon S Anthony
1997-08-13 0:00 ` Ken Garlington
1997-08-13 0:00 ` Ted Velkoff
1997-08-14 0:00 ` Matt Austern
1997-08-14 0:00 ` Ted Velkoff
1997-08-18 0:00 ` Matt Austern
1997-08-20 0:00 ` Joachim Durchholz
1997-08-21 0:00 ` Jon S Anthony
1997-08-22 0:00 ` Joachim Durchholz
1997-08-15 0:00 ` Ken Garlington
1997-08-16 0:00 ` Ted Velkoff
1997-08-16 0:00 ` Ken Garlington
1997-08-16 0:00 ` Jon S Anthony
1997-08-16 0:00 ` Ken Garlington
1997-08-18 0:00 ` Ted Velkoff
1997-08-18 0:00 ` Ted Velkoff
1997-08-19 0:00 ` Ken Garlington
1997-08-14 0:00 ` Nick Leaton
1997-08-16 0:00 ` Robert Dewar
1997-08-18 0:00 ` Joachim Durchholz
1997-08-19 0:00 ` Ken Garlington
1997-08-21 0:00 ` Joachim Durchholz
1997-08-23 0:00 ` Ken Garlington
[not found] ` <JSA.97Aug25181856@alexandria.organon.com>
[not found] ` <34023A1F.41C67EA6@eiffel.com>
1997-08-25 0:00 ` Design by Contract Bertrand Meyer
[not found] ` <3402d123.0@news.uni-ulm.de>
1997-08-26 0:00 ` Nick Leaton
[not found] ` <3402e51d.0@news.uni-ulm.de>
[not found] ` <3402E8C9.3384D976@calfp.co.uk>
[not found] ` <dewar.872631036@merv>
1997-08-27 0:00 ` Ted Velkoff
[not found] ` <3403F668.F6B57D97@calfp.co.uk>
[not found] ` <34041331.0@news.uni-ulm.de>
[not found] ` <3404696D.4487EB71@eiffel.com>
1997-08-27 0:00 ` Interface/Implementation (was Re: Design by Contract) Bertrand Meyer
[not found] ` <34048FDC.13728473@eiffel.com>
1997-08-27 0:00 ` Bertrand Meyer
1997-08-28 0:00 ` Jon S Anthony
1997-08-29 0:00 ` Robert Dewar
[not found] ` <EForsv.Fqo@ecf.toronto.edu>
[not found] ` <JSA.97Aug29191413@alexandria.organon.com>
[not found] ` <EFqDAG.2zn@ecf.toronto.edu>
1997-08-30 0:00 ` Jon S Anthony
1997-09-02 0:00 ` Don Harrison
1997-09-02 0:00 ` Jon S Anthony
1997-09-03 0:00 ` Don Harrison
[not found] ` <EFwuzD.BxE@ecf.toronto.edu>
1997-09-04 0:00 ` Don Harrison
1997-09-05 0:00 ` Patrick Doyle
1997-09-09 0:00 ` Don Harrison
1997-09-09 0:00 ` W. Wesley Groleau x4923
1997-09-10 0:00 ` Veli-Pekka Nousiainen
1997-09-10 0:00 ` Samuel Mize
1997-09-12 0:00 ` Don Harrison
1997-09-10 0:00 ` Patrick Doyle
1997-09-10 0:00 ` Joerg Rodemann
1997-09-10 0:00 ` Patrick Doyle
1997-09-11 0:00 ` Matt Austern
1997-09-12 0:00 ` Jon S Anthony
1997-09-13 0:00 ` Patrick Doyle
1997-09-10 0:00 ` Joachim Durchholz
1997-09-12 0:00 ` Joerg Rodemann
1997-09-11 0:00 ` Robert S. White
1997-09-11 0:00 ` Don Harrison
1997-09-12 0:00 ` Robert Dewar
1997-09-13 0:00 ` Patrick Doyle
1997-09-12 0:00 ` Jon S Anthony
1997-09-13 0:00 ` Patrick Doyle
1997-09-16 0:00 ` Brian Rogoff
1997-09-04 0:00 ` John G. Volan
1997-09-04 0:00 ` W. Wesley Groleau x4923
1997-09-05 0:00 ` Patrick Doyle
1997-09-05 0:00 ` W. Wesley Groleau x4923
1997-09-06 0:00 ` Patrick Doyle
1997-09-08 0:00 ` Paul Johnson
1997-09-06 0:00 ` Jon S Anthony
1997-09-08 0:00 ` Robert Dewar
1997-09-09 0:00 ` Patrick Doyle
1997-09-09 0:00 ` Matthew Heaney
1997-09-10 0:00 ` Patrick Doyle
1997-09-09 0:00 ` Paul Johnson
1997-09-11 0:00 ` Robert Dewar
1997-09-11 0:00 ` Veli-Pekka Nousiainen
1997-09-12 0:00 ` Paul Johnson
1997-09-14 0:00 ` Ken Garlington
1997-09-09 0:00 ` Robert S. White
1997-09-09 0:00 ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-09-10 0:00 ` John Viega
1997-09-10 0:00 ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-09-05 0:00 ` Franck Arnaud
1997-09-05 0:00 ` Patrick Doyle
1997-08-28 0:00 ` Patrick Doyle
1997-08-28 0:00 ` W. Wesley Groleau x4923
1997-08-28 0:00 ` Tucker Taft
1997-08-28 0:00 ` W. Wesley Groleau x4923
1997-08-28 0:00 ` Jon S Anthony
[not found] ` <EFnK8D.Lsv@ecf.toronto.edu>
1997-08-29 0:00 ` Jon S Anthony
1997-08-30 0:00 ` Patrick Doyle
1997-08-30 0:00 ` Jon S Anthony
1997-09-01 0:00 ` Patrick Doyle
1997-08-29 0:00 ` Suzanne Zampella
1997-08-29 0:00 ` Jon S Anthony
[not found] ` <340E9BA2.32B3@rbgg252.rbg1.siemens.de>
1997-09-07 0:00 ` Robert Dewar
[not found] ` <3406A707.787D@dmu.ac.uk>
1997-08-29 0:00 ` a fairy tale (was: Re: Interface/Implementation ) Fred Long
1997-08-29 0:00 ` Interface/Implementation (was Re: Design by Contract) Joerg Rodemann
1997-08-29 0:00 ` Ralph Paul
1997-09-01 0:00 ` Don Harrison
1997-09-01 0:00 ` In defence of plain ascii files ( was " Chris RL Morgan
1997-08-27 0:00 ` Design by Contract Matt Kennel (Remove 'NOSPAM' to reply)
[not found] ` <34050F3C.5A3A@invest.amp.com.au>
1997-08-28 0:00 ` Robert Dewar
1997-08-29 0:00 ` Paul Johnson
1997-08-31 0:00 ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-09-01 0:00 ` John F. Bell III
1997-09-02 0:00 ` Ken Garlington
1997-09-05 0:00 ` Robert Dewar
[not found] ` <dewar.872887402@merv>
1997-09-02 0:00 ` Ken Garlington
1997-09-03 0:00 ` Thomas Beale
[not found] ` <EFxx8q.2sw@ecf.toronto.edu>
1997-09-04 0:00 ` Thomas Beale
1997-09-05 0:00 ` Robert Dewar
1997-09-05 0:00 ` Ken Garlington
[not found] ` <340306E1.5FB64D70@XYZZYcalfp.com>
1997-08-28 0:00 ` Mark Bennison
1997-08-28 0:00 ` Separation of IF and Imp: process issue? Jeff Kotula
[not found] ` <x7vd8myyrzx.fsf@pogner.demon.co.uk>
1997-08-30 0:00 ` Patrick Doyle
1997-08-31 0:00 ` Jon S Anthony
1997-09-01 0:00 ` Patrick Doyle
1997-09-01 0:00 ` Robert Dewar
1997-09-02 0:00 ` Patrick Doyle
1997-09-03 0:00 ` Jon S Anthony
1997-09-05 0:00 ` Robert Dewar
1997-09-05 0:00 ` W. Wesley Groleau x4923
1997-09-08 0:00 ` Erik Magnuson
1997-09-02 0:00 ` Jon S Anthony
1997-09-03 0:00 ` Patrick Doyle
[not found] ` <x7vzppy250u.fsf@pogner.demon.co.uk>
1997-09-01 0:00 ` Patrick Doyle
[not found] ` <mheaney-ya023680000209972131260001@news.ni.net>
1997-09-03 0:00 ` Patrick Doyle
1997-09-04 0:00 ` Matthew Heaney
1997-09-05 0:00 ` Darren New
1997-09-06 0:00 ` Matthew Heaney
1997-09-07 0:00 ` Darren New
1997-09-08 0:00 ` W. Wesley Groleau x4923
1997-09-09 0:00 ` Patrick Doyle
1997-09-08 0:00 ` Darren New
1997-09-08 0:00 ` Matthew Heaney
1997-09-09 0:00 ` John G. Volan
1997-09-09 0:00 ` Robert S. White
1997-09-09 0:00 ` Darren New
1997-09-09 0:00 ` Nick Leaton
1997-09-09 0:00 ` Jon S Anthony
1997-09-11 0:00 ` Robert Dewar
1997-09-12 0:00 ` Samuel T. Harris
1997-09-09 0:00 ` Mark A Biggar
1997-09-10 0:00 ` Patrick Doyle
1997-09-11 0:00 ` Peter Hermann
1997-09-12 0:00 ` Robert Dewar
1997-09-12 0:00 ` Jon S Anthony
1997-09-10 0:00 ` Darren New
1997-09-11 0:00 ` Joerg Rodemann
1997-09-11 0:00 ` Darren New
1997-09-12 0:00 ` Joerg Rodemann
1997-09-12 0:00 ` Darren New
1997-09-09 0:00 ` Jon S Anthony
1997-09-10 0:00 ` Patrick Doyle
1997-09-12 0:00 ` Jon S Anthony
1997-09-12 0:00 ` Robert A Duff
1997-09-13 0:00 ` Jon S Anthony
1997-09-10 0:00 ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-09-10 0:00 ` Brian Rogoff
1997-09-12 0:00 ` Jon S Anthony
1997-09-10 0:00 ` news_check.py
1997-09-11 0:00 ` Robert Dewar
1997-09-16 0:00 ` Owen Fellows
1997-09-09 0:00 ` Fergus Henderson
1997-09-10 0:00 ` Paul Johnson
1997-09-11 0:00 ` Robert Dewar
1997-09-10 0:00 ` Robert Dewar
1997-09-10 0:00 ` Walter Mallory
1997-09-10 0:00 ` Darren New
1997-09-10 0:00 ` Joerg Rodemann
1997-09-10 0:00 ` Nick Leaton
1997-09-10 0:00 ` W. Wesley Groleau x4923
1997-09-10 0:00 ` W. Wesley Groleau x4923
1997-09-10 0:00 ` Joerg Rodemann
1997-09-10 0:00 ` Matthew Heaney [this message]
1997-09-12 0:00 ` Precondition Checking For Ada 0X (Was: Separation of IF and Imp: process issue?) Robert Dewar
1997-09-15 0:00 ` W. Wesley Groleau x4923
1997-09-16 0:00 ` Robert Dewar
1997-09-16 0:00 ` Don Harrison
1997-09-16 0:00 ` Joerg Rodemann
1997-09-16 0:00 ` Roger Browne
1997-09-16 0:00 ` Robert A Duff
1997-09-17 0:00 ` Joachim Durchholz
1997-09-17 0:00 ` Franck Arnaud
1997-09-18 0:00 ` Don Harrison
1997-09-18 0:00 ` Robert A Duff
1997-09-18 0:00 ` Juergen Schlegelmilch
1997-09-18 0:00 ` Jon S Anthony
1997-09-20 0:00 ` Joachim Durchholz
1997-09-17 0:00 ` Lee Webber
1997-09-16 0:00 ` Joachim Durchholz
1997-09-16 0:00 ` Owen Fellows
1997-09-17 0:00 ` Don Harrison
1997-09-17 0:00 ` Paul Johnson
1997-09-20 0:00 ` Matthew Heaney
1997-09-25 0:00 ` Don Harrison
1997-09-25 0:00 ` Matthew Heaney
1997-09-26 0:00 ` Don Harrison
1997-09-29 0:00 ` John G. Volan
1997-09-18 0:00 ` Separation of IF and Imp: process issue? Robert Dewar
[not found] ` <dewar.873826268@merv>
1997-09-10 0:00 ` Samuel Mize
1997-09-10 0:00 ` W. Wesley Groleau x4923
1997-09-10 0:00 ` Scott Ingram
1997-09-12 0:00 ` Robert Dewar
1997-09-12 0:00 ` Scott Ingram
1997-09-11 0:00 ` Robert Dewar
1997-09-05 0:00 ` Patrick Doyle
1997-09-08 0:00 ` John G. Volan
1997-09-09 0:00 ` Nick Leaton
1997-09-06 0:00 ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-09-05 0:00 ` Jon S Anthony
1997-09-05 0:00 ` Samuel Mize
1997-09-06 0:00 ` Patrick Doyle
1997-09-06 0:00 ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-09-06 0:00 ` Jon S Anthony
1997-09-06 0:00 ` Patrick Doyle
1997-09-06 0:00 ` Jon S Anthony
1997-09-07 0:00 ` Patrick Doyle
1997-09-08 0:00 ` Jon S Anthony
1997-09-09 0:00 ` Patrick Doyle
1997-09-09 0:00 ` Samuel Mize
1997-09-09 0:00 ` Matthew Heaney
[not found] ` <5u4941$9m1@gcsin3.geccs.gecm.com>
1997-09-15 0:00 ` Michael Gacsaly
[not found] ` <34026DE7.7D07@pseserv3.fw.hac.com>
[not found] ` <3402C404.56812AFB@XYZZYcalfp.com>
1997-08-27 0:00 ` A DBC experience (was Re: Design by Contract) Simon Wright
[not found] ` <5tvfdt$79g@inet-server.sit.fi>
[not found] ` <34050D8B.569F@deakin.edu.au>
1997-08-28 0:00 ` Richie Bielak
1997-08-29 0:00 ` Peter Horan
[not found] ` <bengtk-2708972209500001@sl35.modempool.kth.se>
1997-08-28 0:00 ` Design by Contract Nick Leaton
1997-08-25 0:00 ` Bertrand Meyer
1997-08-25 0:00 ` Steve Stringfellow
1997-08-26 0:00 ` Don Harrison
1997-08-25 0:00 ` Bertrand Meyer
[not found] ` <JSA.97Aug26151833@alexandria.organon.com>
1997-08-27 0:00 ` Patrick Doyle
1997-08-25 0:00 ` Bertrand Meyer
1997-08-12 0:00 ` Safety-critical development in Ada and Eiffel Ken Garlington
1997-08-23 0:00 ` W. Wesley Groleau x4923
1997-08-23 0:00 ` Robert Dewar
1997-07-16 0:00 ` Warwick Pulley
1997-07-16 0:00 ` Nick Leaton
1997-07-16 0:00 ` Robert Dewar
1997-07-20 0:00 ` Joachim Durchholz
1997-07-24 0:00 ` Paul M Gover
1997-07-26 0:00 ` Joachim Durchholz
1997-07-28 0:00 ` Robert S. White
1997-08-09 0:00 ` Marinos J. Yannikos
1997-08-10 0:00 ` Robert S. White
1997-08-11 0:00 ` Peter Hamer
1997-08-11 0:00 ` "Paul E. Bennett"
1997-07-29 0:00 ` Don Harrison
1997-07-24 0:00 ` Joe Buck
1997-07-21 0:00 ` Don Harrison
1997-07-17 0:00 ` Warwick Pulley
1997-07-17 0:00 ` Nick Leaton
1997-07-17 0:00 ` Richie Bielak
1997-07-17 0:00 ` Karel Th�nissen
1997-07-17 0:00 ` Samuel Tardieu
1997-07-17 0:00 ` Richie Bielak
1997-07-23 0:00 ` Don Harrison
1997-07-23 0:00 ` Karel Th�nissen
1997-07-24 0:00 ` Don Harrison
1997-07-24 0:00 ` Don Harrison
1997-07-24 0:00 ` Ken Garlington
1997-07-29 0:00 ` Don Harrison
1997-07-29 0:00 ` Ron Kohl
1997-07-29 0:00 ` Don Harrison
1997-07-30 0:00 ` Don Harrison
1997-07-31 0:00 ` Ken Garlington
1997-08-07 0:00 ` Don Harrison
1997-08-07 0:00 ` Ken Garlington
1997-08-13 0:00 ` Don Harrison
1997-08-13 0:00 ` Ken Garlington
1997-08-14 0:00 ` Don Harrison
1997-08-15 0:00 ` Ken Garlington
1997-08-19 0:00 ` Don Harrison
1997-08-19 0:00 ` Lee Webber
1997-08-20 0:00 ` Ken Garlington
1997-08-21 0:00 ` Don Harrison
1997-08-15 0:00 ` Don Harrison
1997-08-15 0:00 ` Ken Garlington
1997-08-16 0:00 ` Jon S Anthony
1997-08-19 0:00 ` Don Harrison
1997-08-20 0:00 ` Ken Garlington
1997-08-15 0:00 ` Lee Webber
1997-08-19 0:00 ` Don Harrison
1997-08-19 0:00 ` Lee Webber
1997-07-23 0:00 ` Ken Garlington
1997-07-25 0:00 ` Don Harrison
1997-07-23 0:00 ` Jon S Anthony
1997-07-24 0:00 ` Don Harrison
1997-07-24 0:00 ` Jon S Anthony
1997-07-17 0:00 ` Ken Garlington
1997-07-23 0:00 ` Don Harrison
1997-07-23 0:00 ` Ken Garlington
1997-07-25 0:00 ` Don Harrison
1997-07-23 0:00 ` Don Harrison
1997-07-23 0:00 ` Ken Garlington
1997-07-25 0:00 ` Don Harrison
1997-07-17 0:00 ` Ken Garlington
[not found] ` <JSA.97Jul17174044@alexandria.organon.com>
1997-07-18 0:00 ` Joachim Durchholz
1997-07-18 0:00 ` Nick Leaton
1997-07-17 0:00 ` Warwick Pulley
1997-07-17 0:00 ` Don Harrison
1997-07-17 0:00 ` Karel Th�nissen
1997-07-21 0:00 ` Don Harrison
1997-07-17 0:00 ` Robert Dewar
1997-07-22 0:00 ` Don Harrison
1997-07-17 0:00 ` Robert Dewar
1997-07-18 0:00 ` Jon S Anthony
1997-07-19 0:00 ` Robert A Duff
1997-07-20 0:00 ` Use use type? (Was Re: Safety-critical development in Ada and Eiffel) Brian Rogoff
1997-07-21 0:00 ` Robert Dewar
1997-07-21 0:00 ` Brian Rogoff
1997-07-22 0:00 ` Robert Dewar
1997-07-21 0:00 ` Robert A Duff
1997-07-21 0:00 ` Brian Rogoff
1997-07-24 0:00 ` Morgan Palaeo Associates
1997-07-24 0:00 ` Jon S Anthony
[not found] ` <199707251337.PAA20933@basement.replay.com>
1997-07-26 0:00 ` Karel Th�nissen
1997-08-01 0:00 ` J-P. Rosen
1997-08-01 0:00 ` Robert A Duff
1997-08-02 0:00 ` Robert Dewar
1997-07-21 0:00 ` Robert Dewar
1997-07-21 0:00 ` Safety-critical development in Ada and Eiffel W. Wesley Groleau x4923
1997-07-21 0:00 ` Don Harrison
1997-07-21 0:00 ` Jon S Anthony
1997-07-21 0:00 ` Brian Rogoff
1997-07-16 0:00 ` Alan Brain
1997-07-18 0:00 ` Don Harrison
1997-07-22 0:00 ` Alan Brain
1997-07-22 0:00 ` Don Harrison
1997-07-23 0:00 ` Jon S Anthony
1997-07-24 0:00 ` Don Harrison
1997-07-25 0:00 ` Alan Brain
1997-07-25 0:00 ` Jon S Anthony
1997-07-11 0:00 ` Kazimir Majorinc
1997-07-12 0:00 ` Ken Garlington
1997-07-11 0:00 ` Don Harrison
[not found] ` <slrn5rq1gc.che.abo@minkirri. <slrn5s1132.hf1.abo@minkirri.apana.org.au>
1997-07-08 0:00 ` Is ADA as good for graphics programming as C? (WAS: Re: Avoiding the second historic mistake) Richard Kenner
1997-07-08 0:00 ` Dale Pontius
[not found] ` <33B16CBB.417A@gdesys <slrn5rn570.j6j.abo@minkirri.apana.org.au>
1997-07-04 0:00 ` Samuel Mize
[not found] ` <33B16CBB <slrn5rq1gc.che.abo@minkirri.apana.org.au>
1997-07-05 0:00 ` Larry Kilgallen
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