kulanthai velu wrote: > i hope everyone knows ....con't overload .,.*,?:,::,Sizeof .#,##, > > why we con't overload what is it behind .......why we con't overload > any specific reson for that !!!!! > For operator . it would be a problem, because then you can't use the members of the object anymore. The for operator .* and :: (for static members).
For ?: I'm not sure: it would have to return one of the two expressions after ?, but only that one should be evaluated, not both, if you overload it they would be evaluated both (actually || and && don't always evaluate the second argument, but if you overload them it is always evaluated, that's way many people consider it bad to overload them). I think they didn't allow it because it isn't necessary and it would allow a programmer to do things that are too different from the standard behavior. # and ## are preprocessor commands, so you can't overload these. Why would you want to overload sizeof? The standard says it returns the number of bytes in memory that the object uses, there's no reason to change that. > i would like to know sizeof why i could not overload !!!!!!!!!! > > what is the different between Mallco ,New ... what is the different > internal process . > malloc only allocates memory. new allocates memory and also calls constructor, so your constructor can intialize the memory, that is much cleaner and safer. -- Mark Van Peteghem http://www.q-mentum.com -- easier and more powerful unit testing ------------------------ Yahoo! Groups Sponsor --------------------~--> Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar. Now with Pop-Up Blocker. Get it for free! http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/EbFolB/TM --------------------------------------------------------------------~-> To unsubscribe : [EMAIL PROTECTED] Yahoo! Groups Links <*> To reply to this message, go to: http://groups.yahoo.com/group/Programmers-Town/post?act=reply&messageNum=3778 Please do not reply to this message via email. More information here: http://help.yahoo.com/help/us/groups/messages/messages-23.html <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Programmers-Town/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
