stack-allocated pair iterator

generated.js

Main.main = function() {
	var a = ["a","b","c"];
	var _g_a = a;
	var _g_i = 0;
	while(_g_i < _g_a.length) {
		var p_idx = _g_i;
		var p_val = _g_a[_g_i++];
		console.log(p_idx);
		console.log(p_val);
	}
};

Main.hx

class Main
{
    static function main()
    {
        var a = ["a", "b", "c"];

        for (p in new IndexIter(a))
        {
            trace(p.idx);
            trace(p.val);
        }
    }
}

class IndexIter<T>
{
    var a:Array<T>;
    var i:Int;

    public inline function new(arr:Array<T>)
    {
        a = arr;
        i = 0;
    }

    public inline function hasNext() return i < a.length;
    public inline function next():Pair<T> return {idx: i, val: a[i++]};
}

typedef Pair<T> = {idx:Int, val:T};