From: Kenneth Eunjung <ken70r@...>
Date: 2010-04-09T16:35:54+09:00
Subject: match at least one element of array to another

Hi is there a simple way to return true if at least one element of an
array matches at least one element of another array?

For example let's say I have @groups = '4,6'.split(',') and @allowed =
'1,4'.split(',')

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

Thank you!
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