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Re: failure than error


From: Paulo Moura
Subject: Re: failure than error
Date: Mon, 25 Oct 2004 11:49:44 +0100


On 25/out/2004, at 11:41, Takushi Tanaka wrote:

Hello  Mr. Gnu-Prolog,

When a goal is neither a fact nor a rule-head,
Gnu-Prolog outputs "uncaught exception: error(...)".
Though it is useful to check typing error, I want to
treat the goal as new predicate for Prolog.

Is it possible to treat the goal as failure rather
than error?

Try:

        | ?- catch(Your_Goal, _, fail).

Cheers,

Paulo


-----------------------------------------------------------
Paulo Jorge Lopes de Moura
Dep. of Informatics                   Office 4.3  Ext. 3257
University of Beira Interior          Phone: +351 275319700
6201-001 Covilhã                      Fax:   +351 275319891
Portugal

<mailto:address@hidden>
<http://www.di.ubi.pt/~pmoura>     <http://www.logtalk.org>
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