Comments on: Architectural Atrocities, part 8: is there no equality?

By: Lack of operator overloading in ActionScript 3.0 - Programmers Goodies

Lack of operator overloading in ActionScript 3.0 - Programmers Goodies — Tue, 05 Jul 2011 00:59:07 +0000

[...] I’ve written some more about this (in the context of Flex) on my blog: Is there no equality?. [...]

By: droopy6

droopy6 — Fri, 24 Jun 2011 10:54:05 +0000

you are right, it’s unbelievable but true. even in Flex4. set selectedItem in a spark combobox with a cloned object, the selection will never be set with the right item in the dataprovider. the selection remain empty. baaaad.

By: Theo

Theo — Wed, 19 Aug 2009 13:06:00 +0000

No I don’t know, sorry. I doubt it though.

By: benoit

benoit — Wed, 19 Aug 2009 12:27:32 +0000

Hi all, No equality is really an atrocity !

Do you know if flex sdk 4 or 3.4.0 solve this issue ?

Thanks.

By: Theo

Theo — Thu, 02 Jul 2009 20:09:14 +0000

My current approach is to manually merge the new data into the existing dataprovider so that the instances are the same and then the selectedItem and such will be the same objects

I do this too, it seems like the least bad solution.

By: tgendler

tgendler — Thu, 02 Jul 2009 14:10:56 +0000

great article :)

I started digging into this exactly because of this: "They don’t use it for things I would consider obvious: like the case where you set the selectedItem property of a list." Do you have a suggestion for getting around this? This is deep in the implementation of AdvancedListBase and i wouldn't want to implement all of that, way too risky.

My current approach is to manually merge the new data into the existing dataprovider so that the instances are the same and then the selectedItem and such will be the same objects. I am a little annoyed at having to do this as the whole uid thing would be such an elegant fix, if only it was actually used by the framework itself!

I'd be happy to hear your thoughts on this.

Talya

By: Actionscript collections « Fiji Ecuador Seattle Greece Montana

Actionscript collections « Fiji Ecuador Seattle Greece Montana — Thu, 21 May 2009 23:59:27 +0000

[...] http://blog.iconara.net/2007/11/25/architectural-atrocities-part-8-is-there-no-equality/ Possibly related posts: (automatically generated)Object Oriented Perl and OOP FrameworksReconciling MVC with web pagesThe many ways of OOP in perlLinqDataSource not deleting records [...]

By: 狐狸理财术 » Flex中的对象比较（相等性）

狐狸理财术 » Flex中的对象比较（相等性） — Mon, 05 Jan 2009 03:03:09 +0000

[...] 国外有篇文章讨论了这一问题：Architectural Atrocities, part 8: is there no equality? [...]

By: bjorn

bjorn — Wed, 13 Aug 2008 12:18:15 +0000

Thanks for this. I got some strange behaviour as well when using ArrayCollection that has a sort implementation.

arr.getItemIndex(obj1) always returns -1 even though I see obj1 in the debugger at a specific location in the collection.

By: pjotr

pjotr — Tue, 12 Feb 2008 07:58:19 +0000

thanks, very interesting