The $name: Pattern thing I am convinced is to do with Mark's prior history of being abused by perl ;)
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. So here we are ;) On Fri, Sep 24, 2010 at 12:29 AM, Greg Barton <[email protected]> wrote: > Yes, and I don't think we want to take readability cues from Perl. :) > > GreG > > On Sep 23, 2010, at 3:03, Wolfgang Laun <[email protected]> wrote: > > On 23 September 2010 09:31, Bruno Unna < <[email protected]> > [email protected]> wrote: > >> 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 ( <http://bit.ly/dgw4GT>http://bit.ly/dgw4GT): >> >> > Low precedence "and", "or", "xor" were introduced to permit "Perl poetry", > or, more seriously, to > permit control flow using a logical expression, especially after function > calls without parentheses. > see Naples or die; # same as: see(Napes) || die(); but not: see(Naples > || die() ); > > No way this makes any sense in Drools. > > -W > > 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. >> >> >> 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. >> >> Regards. >> >> >> > _______________________________________________ > rules-dev mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-dev > > > > _______________________________________________ > rules-dev mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-dev > > -- Michael D Neale home: www.michaelneale.net blog: michaelneale.blogspot.com
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