Search a value in Flex Array Collection

Question

Is there a way to pass a value to a flex ArrayCollection and check whether it exists there or not. I mean, I want to insert values to a Flex Array but before that, i need to check if it already exists or not. Let me know if we can do this without looping through the ArrayCollection which i found as a bottleneck if the length of the ArrayCollection is high

score 1 · Accepted Answer · answered Jun 03 '13 at 08:00

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Just check the API docs: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/mx/collections/ArrayCollection.html

ArrayCollection#getItemIndex is what you want.

answered Jun 03 '13 at 08:00

Creynders

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score 0 · Answer 2 · answered Jun 03 '13 at 13:53

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ArrayCollection has a "contains" method that you can use for this.

Note that if you really want to search fast, I would suggest that you create a lookup table or implement a binary search if your collection is always sorted.

answered Jun 03 '13 at 13:53

Christophe Herreman

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thanks for the reply.as far as I know contains() method checks for the object's existence comparing references. This always returned false for me – sher17 Jun 09 '13 at 08:07
That is correct. If your objects are different instances you'll need to implement a search function yourself. – Christophe Herreman Jun 09 '13 at 08:43

Search a value in Flex Array Collection

2 Answers2