ArrayCollection and contains

Question

I have created an array of multiple objects, and want to be
able to search in the array as I loop over rows in a datagrid to
determine whether to add an entry to the array (if not present). At
first I tried using indexOf, but that doesn't work if the array has
multiple named values. I switched to adding the array to an
arraycollection and am trying to use arraycollection.contains...
Not having any luck, so am curious to see syntax for checking
on the existence of a value from the array in the array collection.
Surely it has to be easier than I am making it - here is my latest
attempt:
function testArray() {
var test:Array = [{Classname:"class
10",data:1},{Classname:"class 11",data:2}];
var testAc:ArrayCollection = new ArrayCollection(test);
for (var i=0;i<test.length;i++) {
Alert.show(testAc.contains('class 10').toString());
Hopefully someone has already done this or something similar
Ethan

Answer 1

Ethan,
If you are going to this much trouble, you might as well
simply capture the Classname property and push it into a seperate
array, then go back to using indexOf.
var nameArray:Array = new Array();
for (var index:int=0 ; index<test.length ;index++){
nameArray.push(test[index].Classname);
var isItHere:int = nameArray.indexOf('Class 1');