Re: what happened to that new isset() like language

I still think // and //= would be the most reasonable. They involve the least amount of syntax and // looks similar to || On 10/29/05, Greg Beaver <cellog@php.net> wrote: > Sara Golemon wrote: > >>> Evaluating an idea based on it's syntactic similarities to other > >>> languages is complete and utter nonsense. It has nothing to with being > >>> like language Xyz. It has to do with familiarity to language constructs. > >>> One already understands the idea of 'this || that'. It's certainly > >> > >> > >> I'll throw the water on this one: > >> > >> <?php > >> $c = 0; > >> $a = 1; > >> var_dump($c || $a); > >> ?> > >> > >> Changing true into false consitutes a rather severe BC break :). > >> > > How about ||| and |||= ? > > I don't think the meaning of this operator is obvious. Right now, the > only operators whose meaning are not immediately obvious (in my eyes) are: > > @ - error suppression > & - make reference in some cases, bitwise and in others > ^ - bitwise xor but what are you gonna do :) > > For an operation as complicated as "use the first variable that exists" > I would be most comfortable with: > > $d = first-existing: $a, $b, $c; > > This way, no conflict with functions (parse error in previous php > versions), and it is extremely clear. The parser would look for > > T_FIRSTEXISTING ':' existing_varlist > > in the expression section, and of course defining existing_varlist as: > > existing_varlist: > variable > | existing_varlist ',' variable > ; > > Greg > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > > -- ------------- buddhahead@gmail.com