[FLEX-34942] Potential for performance improvements in ListCollectionView.addAll/addAllAt

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Collections
• Assignee: Unassigned
• Reporter: Gareth Daniel Smith
• Created: 14/Oct/15 10:13
• Updated: 14/Oct/15 10:13

Description

The performance of ListCollectionView.addAll could be improved in the case where there is no sort/filter. Currently, in this case, one event is emitted per added row, but AFAICT there only needs to be a single event emitted (that would contain all the new rows).

This would improve performance a lot where there are grids/lists that are bound to ListCollectionView/ArrayCollection instances that get updated, which is a common use-case in my experience.

On a related note, please consider my pull request here: https://github.com/apache/flex-sdk/pull/18 - as this would alllow me to move away from ArrayCollection towards ArrayList without creating bugs that won't be detectable until runtime.