Is there any open source collection framework, written in ActionScript that would emulate HashMap, HashSet, LinkedHashMap and LinkedHashSet Java class implementations.
Check the Lite Collections for ActionScript 3. We are currently talking with the author about making this an AS3Commons project.
Eric Feminella's HashMap is very nice.
AS3Commons Collections include (besides others):
The project is currently the first address for a serious AS collections framework: It consists of a high level framework architecture, the most comprehensive set of different collections and the fastest collection implementations. Additionally, most of the collections come in a bindable version to be connected to user interfaces.
AS3Commons Collections | .../as3commons-collections/
Collections Performance Tests | .../collections-framework-performance-comparision/
AS3Commons Organization | http://as3commons.org/
And, yes, I am the author :-)
Have a look at AS3 Data Structures (AS3Ds) by polygonal