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Re: Aborting a computation ...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg93293] Re: Aborting a computation ...
  • From: "sjoerd.c.devries at gmail.com" <sjoerd.c.devries at gmail.com>
  • Date: Mon, 3 Nov 2008 05:25:32 -0500 (EST)
  • References: <gejj0o$2j3$1@smc.vnet.net>

Ignacio,

As far as I know, Abort[] aborts everyting in the execution chain that
led to the execution of Abort[] itself. So, in your example it only
aborts the If statement, not the following Print statement.

Cheers -- Sjoerd

On Nov 2, 8:57 am, Ignacio Plazeta <Ignacio.Plaz... at speednet.es>
wrote:
> Dear friends
>
> There is a conceptual lack in my
> understanding of the way to stop
> a computation; nor Abort[] neither
> Interrupt[] works as I supposed
> they do.
>
> The following code prints
> "something" when myFolder
> exists and when it doesn't.
>
> ------------------------------------
> myFolder="c\\someFolder";
>
> errorLevel=Catch[
>
>    Off[SetDirectory::"cdir"];
>    SetDirectory[myFolder];
>    On[SetDirectory::"cdir"];
>
>    If[
>      Directory[]!=myFolder,
>
>      Print["Warning: folder non found ..."];
>      Throw[0];,
>
>      Throw[1];
>    ];
> ];
>
> If[errorLevel==0,Abort[]];
>
> Print["something"];
>
> ------------------------------------
>
> Of course it may be fixed using:
>
> If[errorLevel == 0,
>
>    Abort[];
>    Print["something"];
>
>    ];
>
> but, in the long run, the code
> became too nested and the questions
> about Abort[]/Interrupt[] still hangs.
>
> Warmest regards.
> Ignacio
>
> ------------------------------------
> P.S. You see, I'm not a native
> speaking English; I apologize for
> my poor lamguage.



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