<option>
	<type>double</type>
	<long>double-list</long>
	<short>D</short>
	<list/>
</option>

vector<double>::iterator i, end;
i = clo.get_double_list("double-list").begin();
end = clo.get_double_list("double-list").end();
if (i == end) {
	cout << 0 << endl;
} else {
	for (;i != end; i++) {
		cout << *i;
		if ((i+1) != end) cout << " ";
	}
	cout << endl;
}

--double-list 1 -D 4.5
-D 6.4 --double-list 1.8
--

1 4.5
6.4 1.8
0
