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Ruby 1.9²»»áɱËÀPython

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Éè¼ÆÄ£Ê½ ¹Û²ìÕßģʽʵÏÖÀý×Ó(ruby)

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# -*- coding: GB2312 -*-
require 'observer'
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class PObservable
include Observable
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def update(arg)
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