The $name: Pattern thing I am convinced is to do with Mark's prior history of being abused by perl ;)<div><br></div><div>But the real reason is we wanted to use ?name: Pattern() - using "?" like the clips lineage of languages - but IIRC even ilog allows that. We wanted our labels to be compatible with java source code - where $variable is a valid name (although no one actually uses it) and ?name is not. </div>
<div><br>So here we are ;)</div><div><br><br><div class="gmail_quote">On Fri, Sep 24, 2010 at 12:29 AM, Greg Barton <span dir="ltr"><<a href="mailto:greg_barton@yahoo.com">greg_barton@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div bgcolor="#FFFFFF"><div>Yes, and I don't think we want to take readability cues from Perl. :)<br><font color="#888888"><br>
GreG</font></div><div><div></div><div class="h5"><div><br>On Sep 23, 2010, at 3:03, Wolfgang Laun <<a href="mailto:wolfgang.laun@gmail.com" target="_blank">wolfgang.laun@gmail.com</a>> wrote:<br><br></div><div></div>
<blockquote type="cite"><div>On 23 September 2010 09:31, Bruno Unna <span dir="ltr"><<a href="mailto:bruno.unna@gmail.com" target="_blank"></a><a href="mailto:bruno.unna@gmail.com" target="_blank">bruno.unna@gmail.com</a>></span> wrote:<br>
<div class="gmail_quote"><blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
<div>FWIW: in Perl, there are both operators as well (|| and 'or'). However, they are *not* exactly the same. Although they can be used in any context to render a boolean expression, their priority makes the difference. Taken from official documentation (<a href="http://bit.ly/dgw4GT" target="_blank"></a><a href="http://bit.ly/dgw4GT" target="_blank">http://bit.ly/dgw4GT</a>):<div>
<br></div></div></blockquote><div><br>Low precedence "and", "or", "xor" were introduced to permit "Perl poetry", or, more seriously, to<br>permit control flow using a logical expression, especially after function calls without parentheses. <br>
see Naples or die; # same as: see(Napes) || die(); but not: see(Naples || die() );<br><br>No way this makes any sense in Drools.<br><br>-W<br><br></div><blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
<div><div></div><div><blockquote type="cite">Binary "or" returns the logical disjunction of the two surrounding
expressions. It's equivalent to || except for the very low precedence.
This makes it useful for control flow.</blockquote></div><div><br></div><div>Nonetheless, it must be taken into account that the distinction makes sense for a Perl programmer. For a rules-writing guy (or girl) perhaps the distinction is extremely obscure.</div>
<div><br></div><div>Regards.<br><div><br></div><br></div></div></blockquote></div><br>
</div></blockquote></div></div><div class="im"><blockquote type="cite"><div><span>_______________________________________________</span><br><span>rules-dev mailing list</span><br><span><a href="mailto:rules-dev@lists.jboss.org" target="_blank">rules-dev@lists.jboss.org</a></span><br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Michael D Neale<br>home: <a href="http://www.michaelneale.net">www.michaelneale.net</a><br>blog: <a href="http://michaelneale.blogspot.com">michaelneale.blogspot.com</a><br>
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