imho this shows that dictionary keys are sorted (even in the case of a namespace, as here flash.display there is an order, alphabetcially it seems) and the keys are walked, and if a key that is at the very first position (of that internal order) is added while iterating, it gets NOT visited in the looping. This is bad, i guess that is a bug in t…

gistfile1.as

/*

imho this shows that dictionary keys are sorted (even in the case of a namespace, as here flash.display
there is an order, alphabetcially it seems) and the keys are walked, 
and if a key that is at the very first position (of that internal order) is added  while iterating,
it gets NOT visited in the looping.
This is bad, i guess that is a bug in the ActionScript runtime.
It seems there is some comparison that breaks when it's index is 0 ... 
let me know if I am wrong

*/

var dict = new Dictionary;
dict[flash.display.ActionScriptVersion] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
  if (isFirstRun) {
		dict[flash.display.AVM1Movie] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[flash.display.AVM1Movie] = " + dict[flash.display.AVM1Movie]);
trace("dict[flash.display.ActionScriptVersion] = " + dict[flash.display.ActionScriptVersion]);

trace('======');

var dict = new Dictionary;
dict[flash.display.AVM1Movie] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
	if (isFirstRun) {
		dict[flash.display.ActionScriptVersion] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[flash.display.AVM1Movie] = " + dict[flash.display.AVM1Movie]);
trace("dict[flash.display.ActionScriptVersion] = " + dict[flash.display.ActionScriptVersion]);

trace('======');

var dict = new Dictionary;
dict[flash.display.AVM1Movie] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
	if (isFirstRun) {
		dict[flash.display.Bitmap] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[flash.display.AVM1Movie] = " + dict[flash.display.AVM1Movie]);
trace("dict[flash.display.Bitmap] = " + dict[flash.display.Bitmap]);

trace('======');

var dict = new Dictionary;
dict[flash.display.Bitmap] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
	if (isFirstRun) {
		dict[flash.display.AVM1Movie] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[flash.display.AVM1Movie] = " + dict[flash.display.AVM1Movie]);
trace("dict[flash.display.Bitmap] = " + dict[flash.display.Bitmap]);

trace('======');

var dict = new Dictionary;
dict[0] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
	if (isFirstRun) {
		dict[1] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[0] = " + dict[0]);
trace("dict[1] = " + dict[1]);

trace('======');

var dict = new Dictionary;
dict[1] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
	if (isFirstRun) {
		dict[0] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[0] = " + dict[0]);
trace("dict[1] = " + dict[1]);

trace('======');

var dict = new Dictionary;
dict[1] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
	if (isFirstRun) {
		dict[2] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[1] = " + dict[1]);
trace("dict[2] = " + dict[2]);

trace('======');

var dict = new Dictionary;
dict[2] = true;
var isFirstRun = true;
for (var key in dict) {
trace('key = ' + key);
	if (isFirstRun) {
		dict[1] = true;
		isFirstRun = false;
	}
	delete dict[key];
}
trace("dict[1] = " + dict[1]);
trace("dict[2] = " + dict[2]);


/*

key = [class ActionScriptVersion]
dict[flash.display.AVM1Movie] = true
dict[flash.display.ActionScriptVersion] = undefined
======
key = [class AVM1Movie]
key = [class ActionScriptVersion]
dict[flash.display.AVM1Movie] = undefined
dict[flash.display.ActionScriptVersion] = undefined
======
key = [class AVM1Movie]
key = [class Bitmap]
dict[flash.display.AVM1Movie] = undefined
dict[flash.display.Bitmap] = undefined
======
key = [class Bitmap]
key = [class AVM1Movie]
dict[flash.display.AVM1Movie] = undefined
dict[flash.display.Bitmap] = undefined
======
key = 0
key = 1
dict[0] = undefined
dict[1] = undefined
======
key = 1
dict[0] = true
dict[1] = undefined
======
key = 1
key = 2
dict[1] = undefined
dict[2] = undefined
======
key = 2
key = 1
dict[1] = undefined
dict[2] = undefined

*/