From: Joel Pearson <lists@...>
Date: 2013-02-21T18:44:48+09:00
Subject: Re: hchanging value of hash associated with a particular key.

http://www.ruby-doc.org/core-1.9.3/Hash.html

irb(main):001:0> h = {"a" => 100, "b" => 200}
=> {"a"=>100, "b"=>200}
irb(main):002:0> h.store 'a', 300
=> 300
irb(main):003:0> h
=> {"a"=>300, "b"=>200}

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