From: Robert Dober <robert.dober@...>
Date: 2008-07-17T22:44:13+09:00
Subject: Re: The next number that is not in an array

>  true while restricted_numbers.include?(n+=1)
I think there is a typo in here ;)

Did you mean

    42 while restricted_numbers.include?( n+= 1 )

of course you did.