在 英语 中使用 Existing class 的示例及其翻译为 中文
{-}
-
Political
-
Ecclesiastic
-
Programming
Creating a new class from already existing class.
我们创建一个新类作为一个已存在类的类型。Advantages Existing classes can easily be reconstructed to implement a new interface.
现有的类可以很容易被更新，以实现新的接口。The Adapter pattern lets you use an existing class to meet a client class's needs.
适配器模式使我们可以重用一个现有类，以满足客户端的需要。The extends keyword indicates that youare making a new class that derives from an existing class.
You want to use an existing class, and its interface does not match the interface you need.
您想使用现有的类，其接口与您需要的接口不匹配。Through inheritance we are able to reuse the existing class fields and methods.
继承已经存在的类就可以复用这些类的方法和域。You want to use an existing class, and its interface does not match the interface you need.
适用性你想使用一个已经存在的类，而它的接口不符合你的需求。Create a common base class from which both the new and existing classes will be derived;
创建一个公共基类让新类和现有的类从它继承；.The system needs to use existing classes, and the interfaces of this class do not meet the needs of the system.
系统需要使用现有的类，但是这个类的接口不符合系统的需要。Often you need classes with similar variables and functions to another existing class.
Even adding new methods to the existing class will have no impact on the new class. .
即使现有的类添加了新的方法，也不会影响新的类。The keyword extends indicates that youare making a new class that derives from an existing class.
关键字extends表明正在构造的新类派生于一个已经存在的类。This design is called composition because the existing class becomes a component of the new one.
这种设计叫做“复合（composition）”，因为现有的类变成新类的一个组件。The resulting class will be rock solid,with no dependencies on the implementation details of the existing class.
这样得到的类将会非常稳固，它不依赖于现有类的实现细节。This design is called composition because the existing class becomes a component of the new one.
这种设计被称作“复合（composition）”，因为现有的类变成了新类的一个组件。At the end of 2017, existing class a office space in Istanbul exceeded 5.3 million m2 of 249 office buildings.
截至2017年年度，伊斯坦布尔的现有A级办公室库存超过530万平方米，分布在249间写字楼。This concept allows you to reuse the fields and methods of the existing class without having to rewrite the code in a new class. .
这个概念允许重用现有类的字段和方法，而无需重写代码在一个新的类。Instead of extending an existing class, give your new class a private field that references an instance of the existing class. .
不用扩展现有的类，而是在新的类中增加一个私有域，它引用现有类的一个实例。One of the most fundamental patterns in class-basedprogramming is being able to extend existing classes to create new ones using inheritance.
基于类的程序设计中一种最基本的模式是允许使用继承来扩展现有的类。It's a way to take an existing class and add to its functionality(as well as change it, the subject of Chapter 7).
它是对现有类加以利用，并为其添加新功能的一种有效途径（同时可以修改它，这是第7章的主题）。If your application requires only simple text input and display,you should continue to use the existing classes of the UIKit framework.
如果您的应用程序只需要一种文本输入和显示，则应使用UIKit框架中已有的类。In such circumstances, you may find that an existing class performs the services that a client needs but has different method names.
在这样的情况下，会发现现有的类虽然提供了客户端需要的服务，却被定义为不同的方法名。Each instance method in the new class invokes the corresponding method on the contained instance of the existing class and returns the results.
新类中的每个实例方法都可以调用被包含的现有类实例中对应的方法，并返回它的结果。Realities of existing class and gender inequalities, to name but a few forms of universal social differentiations, should inform the construction and meaning of all rights and freedoms.
The first limitation is that refactoring an existing class to use factories breaks existing clients.
第一个局限是，重构已经存在的类会破坏客户端代码。Being a company that strive for customer satisfaction,we happily heeded the suggestion and released version 1.01(an upgrade of our existing class).
作为一个以争取客户满意度为己任的公司，我们很高兴地听从了建议，发布了1.01版本，升级了我们现有的类。Com, students can subscribe for unlimited access to all new and existing classes of 70 plus instructors through the All-Access Pass.
Besides using entropy encoding as a way to compress digital data, an entropy encoder can also be used to measure the amount of similarity between streams of data andalready existing classes of data.
除了使用熵编码作为压缩数字数据一种方法外，熵编码器也可以用来测量数据流和已经存在的类的数据之间的相似程度。
