tab1 = [ "abc" : 1, "def" : 2, "ghi" : 3 ];

tab2 = copy(tab1);

while(length(tab1)){
	@local v;
	v = pop(tab1);
	printf("%a -> %a\n", v[0], v[1]);
}

while(length(tab2)){
	@local v;
	v = pop(tab2);
	printf("%a -> %a\n", v[0], v[1]);
}