Below is a function that removes duplicated from an array in ActionScript 3. Just pass the function a variable name.

 Javascript | 
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function removeDuplicate(arr:Array) : void{
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    var i:int;
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    var j: int;
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    for (i = 0; i < arr.length - 1; i++){
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        for (j = i + 1; j < arr.length; j++){
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            if (arr[i] === arr[j]){
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                arr.splice(j, 1);
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            }
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        }
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    }
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}
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