The flex compiler compiles everything to AS3 before compiling it to bytecode.
You can add an extra compiler option to mxml "-keep-generated-actionscript" to see what it is doing. Pure AS3 may be faster as you may not need all the code that the conversation from mxml to as3 generates. Or you might code things "better", for example binding values is very expensive and you could do that quicker by using getter and setters etc Just to confirm the conversion between mxml to as3 is done at compile time, not run time so you only get the hit when developing -----Original Message----- From: Abdul Sattar [mailto:sattar...@gmail.com] Sent: 04 September 2013 15:13 To: users@flex.apache.org Subject: Re: Improve spark List performance I am novice to Flex. Please guide me why pure action script item renders are faster than MXML based ones. Is it true that flex compiler compiles .mxml files to .swf or .swcs. Regards, -- Abdul Sattar *+92 321 6433805* Director IT & Operations Powersoft S3 Mian Building, Faiz Road, Old Muslim Town, Lahore - Pakistan +92 423 6139876 * * Powersoft S3 Mian Building, Faiz Road, Old Muslim Town, Lahore - Pakistan *POWERSOFT :: NOTICE AND DISCLAIMER* This e-mail and any attachment(s) may be confidential and may be legally privileged. It is intended solely for the addressee. If you are not the addressee, dissemination, copying or use of this e-mail or any of its content is prohibited and may be unlawful. If you are not the intended recipient please inform the sender immediately and destroy the e-mail, any attachment(s) and any copies. All liability for virus infection and/or external compromise of security in relation to transmissions by email is excluded to the fullest extent permitted by law. It is your responsibility to scan or otherwise check this email and any attachment(s). Unless otherwise stated (i) views expressed in this message are those of the individual sender (ii) no contract may be construed by this e-mail. On Wed, Sep 4, 2013 at 3:06 PM, Matyas Szabo <matyas.sz...@plumbee.co.uk>wrote: > Id make a UIComponent, that implements the Itemrenderer interfaces, > and then do everything inside it without in pure actionscript not > Flex. Here is an example ive made: > > https://github.com/matyasf/DividedList/blob/master/src/dividedlist/DLi > stRenderer.as I think this is the only way to go, if you want speed > with complex renderers. > > > On 4 September 2013 10:59, Harbs <harbs.li...@gmail.com> wrote: > > > Wow. Sounds very painful. ;-) > > > > On Sep 4, 2013, at 2:16 AM, Alex Harui wrote: > > > > > and I've seen folks put a DataGrid in a renderer. > > > > >
