Hello William,

Thursday, September 26, 2002, 7:04:12 AM, you wrote:

>> Why do array subtraction and array union not behave in the same manner
>> when operating on an array of user-defined objects? Specifically, how
>> can I get the Array union operator to use the user-defined "==" method
>> of the objects, as the Array subtraction operator does? What is the best
>> way to get what I expect?

such methods can try to use
1) hash() and sort_by
2) <=> and sort
3) = in O(n*n) algorithm

-- 
Best regards,
 Bulat                            mailto:bulatz / integ.ru