From: Hans Mackowiak <lists@...>
Date: 2012-10-17T04:42:50+09:00
Subject: Re: Converting binary string to integer for a Ruby newbie

"011001".each_char.reverse_each.with_index.inject(0) {|v,(dig,i)| v + 
(dig == '1' ? 2**i : 0 )} #=> 25

or use rubys cool features: Integer("0b" + "011001") #=> 25

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