Re: Re: Limiting the number of messages
- To: mathgroup at smc.vnet.net
- Subject: [mg103967] Re: [mg103937] Re: Limiting the number of messages
- From: DrMajorBob <btreat1 at austin.rr.com>
- Date: Wed, 14 Oct 2009 07:54:48 -0400 (EDT)
- References: <firstname.lastname@example.org> <200910131120.HAA29409@smc.vnet.net>
- Reply-to: drmajorbob at yahoo.com
I'd be satisfied if they'd just get keyboard or menu-driven abort to
simply ABORT reliably.
It's ridiculous, the number of times I've had to force-quit Mathematica...
sometimes because I have a bug, but more often because the computation is
simply too slow to let it continue.
On Tue, 13 Oct 2009 06:20:30 -0500, David Bailey
<dave at removedbailey.co.uk> wrote:
> Sean McConnell wrote:
>> I'm creating a program with procedures that often depend on
>> sub-procedures. Many times I allow the sub-procedures to do the input
>> checking, so I don't have to write a the same error trapping conditions
>> and messages for each level of the program. The problem is however that
>> although the 'input checking' is passed on to a sub-procedure, the main
>> procedure continues to attempt to evaluate, and can usually return a
>> very long list of error messages whilst it foolishly attempting to
>> evaluate with improperly input variables.
>> I would like to know how to make a procedure abort its evaluation after
>> say 3 or so messages, and simply return the name of the procedure and
>> the variables (as happens when you use /; for conditionals). I have
>> tried the use of Check, and although it checks for messages, it will
>> only return what is typed in to the space for a second argument (eg:
>> Check[f[a], "problem"] will return simply "problem"), I would like to be
>> able to tell the user how they have screwed up.
>> Many thanks,
>> Sean McConnell.
> Really, you need to be able to stop processing (after generating an
> error message or something) and come out to a much higher level of your
> program. The Throw and Catch functions should enable you to do this. If
> you simply need to stop executing altogether after issuing an error
> message, Abort is useful.
> Note however that Abort will not stop the execution of subsequent
> cells if a whole notebook evaluation initiated the process.
> David Bailey
DrMajorBob at yahoo.com
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