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D88EC7E8-E3FB-4F6D-A2CE-00F7A1C48C48@1xCreated with sketchtool.Watch from niconico

From Rails to Rack: Making Rails 3 a Better Ruby Citizen (1/2) - Yehuda KatzWatch from niconico

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From Rails to Rack: Making Rails 3 a Better Ruby Citizen (1/2) - Yehuda Katz

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