[flexcoders] Aspects of functional programming in ActionScript

[Florian]

I've started swimming in the sea of functional programming languages. As in 
languages like Scala, immutability is a very important aspect. Since 
ActionScript offers possibilities to programm in a functional fashion, i'd like 
to know what kind of impacts to expect "consist" instead of "vars" in closures 
for instance. There are certain functions in the framework already, which use 
it which makes me wonder, if it is also a clean approach to code this way 
regarding performance and cleaner code.