Question

Is this working in Dictionary to clean all key reference?

public static function cleanDic(_dic:Dictionary):void
{
    for (var eachKey:String in _dic)
    {
        delete _dic[eachKey];
    }
}

I’m worried about, if I delete some key during a for loop will cause not clean all element.

Is this that will happen?

Thanks

Answer 1

I’m not quite sure what you mean by

I’m worried about, if I delete some key during a for loop will cause not clean all element.

but your code sample is correct, that’s how a Dictionary can be cleaned. (Assuming that you only use Dictionary objects with string keys, since your for loop uses string. See Engineer’s comment below.)

Alternatively, you can set your dictionary to a new instance – that achieves the same slightly faster:

var dict:Dictionary = new Dictionary ();

... // use dict here      

dict = new Dictionary (); // effectively cleans the dictionary

The Flash garbage collector should then free all element in the dictionary that’s being thrown away. __