In object-oriented design, there is a notation of visibility for attributes and operations.

在面向对象的设计中，存在属性及操作可见性的记号。

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Design patterns identify, name, and abstract common themes in object-oriented design.

它区分、命名并且抽象了面向对象设计中的通用概念。

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Design patterns identify, name, and abstract common themes in object-oriented design.

它区分、命名并且抽象了面向对象设计中的通用概念。

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