Re: wacky object idea

On Mon, Aug 28, 2000 at 06:11:16PM +0300, Andi Gutmans wrote: > At 11:02 28/08/00 -0400, Chuck Hagenbuch wrote: > >Quoting Andi Gutmans <andi@zend.com>: > > > > > I think this would cause lots of confusion. PHP types aren't always that > > > obvious and you'll probably get lots of unexpected results. Not sure > > things > > > will work as consistently as you guys expect. > > > >Can you elaborate on this at all? > > > >My idea is that if you specifically define a function inside your class > >(following current convention, it'd be __boolean_value), then whenever you > >needed to evaluate that object in a boolean context, you'd use the result of > >that function. Seems like it shouldn't confuse people, since it would only > >change current behavior if you actually went ahead and changed your code to > >define __boolean_value... > > Yeah but not only would this mean changing lots and lots of the Zend Engine > it is not trivial that this will work nicely in all cases. > We have to think of all the possible contexts we would expect this to work > (I'm sure there are not trivial ones) and then see what happens. unless i'm overseeing something it's quite easy to implement: simply try to call the methods in the zendi_convert_to_*() functions and use the result of the user-function _if_ it has the right type - else issue a warning and revert to normal-bahaviour. the only question is if we can actually call user code while we're in one of those functions. (andi, you can probably answer that) - we already have this functionality in zend_make_printable_zval(). i think it would be really nice it classes could return their own bool, double, long, array or string-val. why not? tc > Andi > --- > Andi Gutmans <andi@zend.com> > http://www.zend.com/ > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, e-mail: php-dev-unsubscribe@lists.php.net > For additional commands, e-mail: php-dev-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net -- Thies C. Arntzen "One Big-Mac, Small Fries and a Coke!" Digital Collections Phone +49 40 235350 Fax +49 40 23535180 Hammerbrookstr. 93 20097 Hamburg / Germany