From: Jeffrey Schwab <jeff@...>
Date: 2006-11-02T23:20:13+09:00
Subject: Re: Question about the Set class, XOR, and arrays

Daniel Berger wrote:
> Ryan Davis wrote:
>> On Nov 1, 2006, at 12:25 PM, Daniel Berger wrote:
>>
>>> irb(main):002:0> Set[1,2,3] ^ Set[3,4,5,5]
>>> => #<Set: {5, 1, 2, 4}>
>>>
>>> Ok, looks good.
>>>
>>> irb(main):003:0> Set[1,2,3] ^ [3,4,5,5]
>>> => #<Set: {1, 2, 4}>
>>>
>>> What?! I'm confused. Do I need a refresher in Set theory or something?
>> It is the way it is implemented... subsequent 5's will toggle it on
>> and off. You should file a bug.
> 
> Done.
> 
> Thanks for confirming my sanity.

In what way is this a bug?  I'm not aware of set theory saying anything 
about the intersection of a set with an array.