This example converts a List of string into a string delimited by comma
public static str strList2str(List _list, str _delimiter = ', ')
{
ListIterator listIterator = new ListIterator(_list);
str result;
while (listIterator.more())
{
result += listIterator.value();
listIterator.next();
if (listIterator.more())
{
result += _delimiter;
}
}
return result;
}