You can measure the difference. It is essentially function call overhead. See http://blogs.adobe.com/aharui/2007/10/actionscript_readwrite_perform_1.html
So, over a million fetches you'll save by using _myVar, but consider that if someone subclasses and overrides, _myVar may not be what you want. From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Josh McDonald Sent: Tuesday, December 02, 2008 1:49 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] any overhead for calling simple getters? There's *some* overhead, but properties are part of the VM, so it's not going to be much. Also, keep in mind, anything that's [Bindable] without [Bindable("eventName")] is going to have a get/set pair generated by MXMLC, even if you've already written a get/set pair. Personally, I only ever use the _privateVar reference internally when there's some voodoo in the getter (like construction logic for first access, or something) I need to work around in some circumstances. -Josh On Wed, Dec 3, 2008 at 7:37 AM, Pan Troglodytes <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote: If I have this: private var _myvar:int; public function get myvar():int { return _myvar; } should I try to refer to it in other parts of the same class as _myvar, or is myvar equally efficient? In Delphi, you can define a property like: FMyVar: Integer; property MyVar:Integer read FMyVar; and all references to MyVar automatically get optimized to FMyVar. But I'm wondering if Flex optimizes out the unnecessary function call represented above. -- Jason -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." Like the cut of my jib? Check out my Flex blog! :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]> :: http://flex.joshmcdonald.info/ :: http://twitter.com/sophistifunk
