In Listing 5, we add methods for setting and accessing data in browser cookies.

清单5中添加了在浏览器cookie中设置和访问数据的方法。

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You can also add methods and data to existing Ruby classes because classes are open.

还可以添加方法和数据到已有的类中，因为类是开放式的。

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Programmers often need to add methods to classes that are part of the language runtime itself.

开发人员经常有向某一语言内建类中添加方法的需求。

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Trade secrets can be found in player-developed (non open source) add-on software and in economically valuable, non-publicly-observable methods used by players to enhance their gameplay.

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The company also has improved drug application methods, such as a foaming mousse in its Desilux and Primolux drugs to add a moisturizing benefit to irritated skin.

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