类可以继承父类的属性。但有时想要的属性,以便能够从父对象继承其值。例如,这是CSS样式的HTML是如何工作的。MooseX :: AttributeTree是一个Perl模块,可以让你的TreeInherit特性适用于任何属性,类 这改变了属性的访问方法的工作方式。当读取属性的值,如果没有值已被设置为在该对象中的属性,所述存取器将返回从父对象的值(其本身可能被继承)。父对象不需要是相同类型的子对象,但必须有一种方法以相同的名称属性的访问方法(除非提供一个fetch_method)。...
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顶部 诊断软件 为 Christopher J. Madsen
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