When to use ArrayCollection or Array in as3?

Question

I know that an ArrayCollection is a wrapper over an Array, but what I wanted to know is when to choose one over the other? Will the over usage of ArrayCollections result in performance?

PicoCreator · Accepted Answer · 2011-06-11 15:20:18Z

8

The main advantage of ArrayCollection is collectionChange event which allows to get advantage of data binding with it.

Some others are:

Possibility to filter or sort elements of collection without modifying or copying of underlying array.
Implementation of ICollectionView which allows to create a cursor and iterate collection with it.
Display of multiple arrays in a datagrid / etc (in this case, arrays are automatically converted to arrayCollections anyway)

If you don't need any of these advantages use simple Array.

edited Jun 11, 2011 at 15:20

PicoCreator

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answered Jun 10, 2011 at 9:24

Constantiner

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3 Comments

J_A_X Over a year ago

It should also be noted that ArrayList is a more simplistic ArrayCollection and is slightly faster. It should also be mentioned that performance is an issue with Collections.

Constantiner Over a year ago

You're right @J_A_X! It hasn't latter two advantages I listed but it can be very useful!

Panzercrisis Over a year ago

For the third point, does that include single multi-dimensional arrays?

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