On 9/19/13 12:23 AM, "flexcapaci...@gmail.com" <flexcapaci...@gmail.com>
wrote:

>It's safe to say we don't know if AS is faster than MXML until we have the
>data. 
We do know that when we switched from MXML skins to AS skins things got
much faster.  And the same for renderers, but we did not analyze why.  If
you compare the generated code, though, the most obvious difference is all
of the binding code.

>Speaking of item renderers, is there a way to set or increase the number
>of
>off screen renderers? Would that speed things up if there were more off
>screen renderers? For example, having ten precached renderers would appear
>smoother than just a few?
For Spark?  I don't think so.  It wouldn't speed up a regular List, but
could help for  a Tree where you expand/collapse nodes.

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