On Wed, Jan 14, 2009 at 7:07 AM, Steven D'Aprano < st...@remove-this-cybersource.com.au> wrote:
> On Wed, 14 Jan 2009 10:53:33 +0000, Marc 'BlackJack' Rintsch wrote: > > > On Wed, 14 Jan 2009 07:14:06 +0000, Steven D'Aprano wrote: > > > >> On Wed, 14 Jan 2009 15:25:38 +1000, James Mills wrote: > >> > >>> On Wed, Jan 14, 2009 at 3:11 PM, Russ P. <russ.paie...@gmail.com> > >>> wrote: (...) > >>> > >>>>> Give me one use-case where you strictly require that members of an > >>>>> object be private and their access enforced as such ? > >>>> > >>>> You're kidding, right? Think about a ten-million line program being > >>>> developed by 100 developers. > >>> > >>> No I"m sorry this is not a valid use-case. > >> > >> Why not? Just saying it isn't doesn't make it not. > > > > Because "developer" means people who don't mess with implementation > > details. So they respect the leading underscore convention. No use > > case for enforced access restriction. > > > O rly? *raise eyebrow* > > http://www.clausbrod.de/cgi-bin/view.pl/Blog/ > WebHome#DefinePrivatePublic20080413_This > > or http://snipurl.com/a0ujm > > Sometimes developers have to work around encapsulation in their own code: > http://www.gamedev.net/community/forums/topic.asp?topic_id=386856 > > Sometimes they do it just because they can: > > http://java-interview-faqs.blogspot.com/2008/08/hacking-by-reflection- > accessing-private.html > or http://snipurl.com/a0tox > > And try this: > > http://www.google.com/codesearch?q=%22%23define+private+public%22 > I think you actually just proved his point- the access restrictions are pointless. If there are ways to access private variables, then aren't they just private by convention as well? The only difference with Python is that, rather than going through the introspection (which Python does better than Java anyway) to get the variables, all you have to do is type that leading underscore. Either way, you know you're doing something you shouldn't. -- Steven > -- > http://mail.python.org/mailman/listinfo/python-list >
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