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MathGroup Archive 1998

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Re: Protection against some Front end problems and crashes

  • To: mathgroup at smc.vnet.net
  • Subject: [mg13022] Re: [mg12943] Protection against some Front end problems and crashes
  • From: "Jrgen Tischer" <jtischer at col2.telecom.com.co>
  • Date: Tue, 30 Jun 1998 00:26:20 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Luc,
thanks for the hint, I was in real need of something of that type. I
even have to offer a slight improvement:

reallyBig[x_] := If[ByteCount[x] > 200000, Shallow[x], x];
  $Post = reallyBig;

This way you know what the output is about and can use it for further
calculation.
There are still some funny side effects, for example a big
InterpolatingFunction can produce a quite unfamiliar output; and then
try the following: f[a__]:=a; f[1,2]. But in general it works just
fine.

Jrgen


-----Original Message-----
From: Barthelet, Luc <lucb at ea.com>
To: mathgroup at smc.vnet.net
Subject: [mg13022] [mg12943] Protection against some Front end problems and
crashes


>
>As mentionned in a few messages recently it is not uncommon to make a
>mistake and then get a huge output to be generated. When that happens,
>one is either stuck for a long time or crashes.
>
>A while back, support at Wolfram gave me this trick that I now have at
>the top of any notebook manipulating large amount of data:
>
>reallyBig[x_] := If[ByteCount[x] > 200000, "Too Large", x];
>  $Post = reallyBig;
>
>It will replace any "large" output by the string "Too Large". I cannot
>count how many times this saved me. Hope it helps you too.
>
>Experience as shown that 200000 enabled me to always see what I want.
>
>Sincerely,
>
>Luc Barthelet
>GM at day, Mayor at Night
>http://www.simcity.com
>
>




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