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Behavioral Patterns ----Command Pattern-----Example3 #3

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@pbsmart

Description

这个例子写的有Bug 一旦UnDo后 进行新的命令就就会出现Bug 原因是UnDo后 再进行Command 没有清除之前的Comand

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        AltStyle によって変換されたページ (->オリジナル) /