There is a convention in Objective-C to provide private methods on a class by defining a category within the implementation file; this could be a relatively simple addition by using chained templates.
在Objective - C中有一个惯例通过在实现文件中定义一个类别为一个类提供了私有的方法；通过使用链式模版这将是相关简单的附加物。
LIisting 5: Statistics class defining access methods.
清单5：定义访问方法的statistics类。
Listing 1 shows an example of an aspect class defining a pair of methods intended to be used as before-and-after advice on a method call.
清单1显示了一个aspect类的例子，它定义了在方法调用上，将被用作前advice和后advice的两个方法。
For one, the class must implement the interface com.google.gwt.user.client.rpc.IsSerializable, which is a marker interface, defining no methods.
举例来说，该类必须实现接口com . google . gwt . user . client . rpc . IsSerializable，该接口是一个标记接口，不定义任何方法。
For one, the class must implement the interface com.google.gwt.user.client.rpc.IsSerializable, which is a marker interface, defining no methods.
举例来说，该类必须实现接口com . google . gwt . user . client . rpc . IsSerializable，该接口是一个标记接口，不定义任何方法。
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