From: Zhenning Guan <g.zhen.ning@...>
Date: 2008-12-13T19:21:13+09:00
Subject: match(f.read)[0].to_a[0]  meaning?

my_ip = (require 'open-uri' ; open("http://myip.dk") { |f|
/([0-9]{1,3}\.){3}[0-9]{1,3}/.match(f.read)[0].to_a[0] })

what is the different between match(f.read)[0].to_a[0] and match(f.read)
?

is someone can  explain it?
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