RosettaCodeData/Task/Remove-duplicate-elements/Sparkling/remove-duplicate-elements.sparkling

function undupe(arr) {
	var t = {};
	foreach(arr, function(key, val) {
		t[val] = true;
	});

	var r = {};
	foreach(t, function(key) {
		r[sizeof r] = key;
	});

	return r;
}