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MathGroup Archive 2005

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Re: Re: debugging

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56742] Re: [mg56694] Re: [mg56676] debugging
  • From: "Hermann Schmitt" <schmitther at t-online.de>
  • Date: Thu, 5 May 2005 06:01:24 -0400 (EDT)
  • References: <200505030926.FAA25668@smc.vnet.net> <200505040433.AAA06152@smc.vnet.net> <2369bb683dd911a8e2b5e3cb70d599e6@mit.edu>
  • Sender: owner-wri-mathgroup at wolfram.com

Hello dan,
what do you want to see?
Write a program, which has the following statement as first statement:
$MessagePrePrint = (Print["Error -> Quit"]; Quit[])&;
(The right side of the assignment statement is a "pure function")
Then write some statements, one or more of which are erroneous and some
Print statements between.
Hermann Schmitt
----- Original Message -----
From: "Daniel Roy" <droy at MIT.EDU>
To: mathgroup at smc.vnet.net
Subject: [mg56742] Re: [mg56694] Re: [mg56676] debugging


> i would be interested in seeing that if possible
>
> dan
>
>
> On May 4, 2005, at 12:33 AM, Hermann Schmitt wrote:
>
> > Hello,
> > I wrote an OO System for Mathematica. The program has 900 lines. I had
> > the
> > same problem as you, but now I found out the following:
> > If the following statement is executed:
> > $MessagePrePrint = (Print["Error -> Quit"]; Quit[])&;
> > the program is finished, when the error message is prepared. Otherwise
> > the
> > program does not finish and it is difficult to find the statement in
> > error.
> > If the program has no output, you have to insert Print statements, to
> > see,
> > what was executed and what was not executed.
> >
> > ----- Original Message -----
> > From: "Daniel Roy" <droy at mit.edu>
To: mathgroup at smc.vnet.net
> > Subject: [mg56742] [mg56694] [mg56676] debugging
> >
> >
> >>
> >> My question concerns debugging.  I've done googling to find a quick
> >> answer but have failed.  I'm developming large functions and without
> >> line numbers telling me where the errors occurred, its becoming very
> >> difficult to develop code quickly.  Can anyone point me in the right
> >> direction in terms of debugging multi line  (at least 50+ lines)
> >> functions?
> >>
> >> thanks,
> >> dan
> >>
> >
>


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