Understood.. as far as I can answer your question... I'd have to say that yes it does 'break' the 'rule' and that it is still the 'preached' method to avoid such things.
> >One of the fundamental rules of blackbox programming is that a function >should never change the value of a global variable. And there are very >compelling reasons why this rule exists. > >I'm simply suggesting that "passing by reference" as a programming >"technique" breaks this fundamental rule.....although I am not suggesting >that passing by reference is in itself a "bad thing"....perhaps a necessary >evil. > >All I'm saying is ....have the "rules" changed since I left Uni? > > > >Ignatius > > > >----- Original Message ----- >From: "Pac mon" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]> >Sent: Wednesday, January 02, 2002 2:30 PM >Subject: Re: Fw: [PHP-WIN] Passing by reference... > > > > Some teachers will say this just because they think students are dumb. >The > > reasoning behind it is that 'if we teach them to pass by reference some > > other dumb programmer can accidentally change values around and break > > stuff!' Simpletons! > > > > > >Isn't passing by reference a "no-no" is terms of good programming? At >least > > >that's what I was told when I studied programming about 12 years ago? > > > > > >Ignatius > > > > > > > > > > > >----- Original Message ----- > > >From: "Anthony Ritter" <[EMAIL PROTECTED]> > > >To: <[EMAIL PROTECTED]> > > >Sent: Tuesday, January 01, 2002 2:40 PM > > >Subject: Re: [PHP-WIN] Passing by reference... > > > > > > > > > > Michael Sims wrote in message: > > > > > Yes, that is true. The "tax" function has the ampersand in the > > >argument > > > > > list, which means that any variable that you send to it gets >passed >by > > > > > reference. This means that any changes to that variable that >occur > > >inside > > > > > the function will actually affect the same variable that is in the > > >scope > > > > of > > > > > the main script. Without the ampersand, the function will only >modify > > > > it's > > > > > own local copy of the variable and leave the one in the main >script > > > > > unaltered. If you remove the ampersand from the above script and > > >re-run > > > > > it, then the output of the first echo statement should not change, >but > > >the > > > > > second one will change to 2500 since the function will no longer >be > > > > > altering the variable in the main script. > > > > > > > > > > http://www.php.net/manual/en/language.references.pass.php > > > > > > > > > > Sorry if I'm not understanding your question... > > > > .................................... > > > > > > > > Thanks for the reply Michael. You've answered my question. > > > > > > > > A happy and healthy new year to you and yours. > > > > Tony Ritter > > > > > > > > > > > > > > > > > > > > -- > > > > PHP Windows Mailing List (http://www.php.net/) > > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > To contact the list administrators, e-mail: >[EMAIL PROTECTED] > > > > > > > > > > > > >-- > > >PHP Windows Mailing List (http://www.php.net/) > > >To unsubscribe, e-mail: [EMAIL PROTECTED] > > >For additional commands, e-mail: [EMAIL PROTECTED] > > >To contact the list administrators, e-mail: >[EMAIL PROTECTED] > > > > > > > > > _________________________________________________________________ > > Join the world’s largest e-mail service with MSN Hotmail. > > http://www.hotmail.com > > > > > > -- > > PHP Windows Mailing List (http://www.php.net/) > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > To contact the list administrators, e-mail: [EMAIL PROTECTED] > > > _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com -- PHP Windows Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
