From: Jean-Julien Fleck <jeanjulien.fleck@...>
Date: 2010-04-09T17:13:04+09:00
Subject: Re: match at least one element of array to another

Hello,

> I want these to be true because 4 is in both @groups and @allowed.

You could check something like

sum = @groups+@allowed
if sum.uniq != sum
  what_you_want_to_do_if_same_elements
end

Example:

>> a,b,c = [1,2],[2,3],[4,5]
=> [[1, 2], [2, 3], [4, 5]]
>> (a+b).uniq != (a+b)
=> true
>> (a+c).uniq != (a+c)
=> false

Cheers

-- 
JJ Fleck
PCSI1 Lycée Kléber