Yeah... thank God it's Sci-Fi Friday, or I'd cry about no native Object.clone() again.
----- Original Message ----- From: "hank williams" <[EMAIL PROTECTED]> To: "Flashcoders mailing list" <[email protected]> Sent: Friday, January 13, 2006 5:52 PM Subject: Re: [Flashcoders] Copying a DataSet Yeah, I really meant there is no such thing as passing *complex* variables in flash, for the reason I explained. Hank On 1/13/06, JesterXL <[EMAIL PROTECTED]> wrote: > Strings and Numbers are passed by val. Can't remember what else is, > though. > > ----- Original Message ----- > From: "hank williams" <[EMAIL PROTECTED]> > To: "Flashcoders mailing list" <[email protected]> > Sent: Friday, January 13, 2006 5:26 PM > Subject: Re: [Flashcoders] Copying a DataSet > > > There is no such thing as passing variables by value in flash. Having > a language automatically create major system data structures seems > fraught with the potential for unintended consequences because of the > hierarchical nature of data structures which point to data structures. > > If you want to make a copy, you need to explicitly make a copy of it. > This is not actually so easy if you are not careful. What you really > want to do is create a new dataset and set the dataProvider of the new > dataset to the dataProvider of the old dataset. This will have the > effect of copying everything out of the old dataset into the new one. > The reason for this, which is not obvious, is that the dataprovider > field is really a "getter" function that copys data (value) rather > than copy's pointers or references. > > Regards > Hank > > On 1/13/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > Can I pass a DataSet byVal and not byRef? I want to create a second > > DataSet > > to filter, sort, do some calculations, etc and leave the original > > DataSet > > intact. > > _______________________________________________ > > Flashcoders mailing list > > [email protected] > > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > > _______________________________________________ > Flashcoders mailing list > [email protected] > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > _______________________________________________ > Flashcoders mailing list > [email protected] > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
