protected type

简明释义

防护式

英英释义

例句

1.The protected type 保护类型 allows subclasses to access the properties of the parent class while keeping them hidden from other classes.

这个保护类型 protected type允许子类访问父类的属性，同时将它们隐藏于其他类之外。

2.When declaring a variable as protected type 保护类型, it can only be accessed by the class itself and its subclasses.

当将变量声明为保护类型 protected type时，它只能被类本身及其子类访问。

3.In Java, you can define a method with a protected type 保护类型 to allow certain access privileges.

在Java中，您可以定义一个带有保护类型 protected type的方法，以允许某些访问权限。

4.In object-oriented programming, a class can have a protected type 保护类型 that restricts access to its members.

在面向对象编程中，类可以有一个保护类型 protected type，限制对其成员的访问。

5.Using a protected type 保护类型 can help enforce encapsulation in your code.

使用保护类型 protected type可以帮助在代码中强制执行封装。

作文

In the realm of programming, particularly in object-oriented languages, the concept of a protected type plays a crucial role in defining access levels to class members. A protected type is a member of a class that can be accessed within its own class and by derived classes, but not outside of these contexts. This encapsulation is essential for maintaining the integrity of data and ensuring that it is only modified in controlled ways.To illustrate this, consider a simple example involving a base class called 'Animal' and a derived class called 'Dog'. In the 'Animal' class, we might have a protected type variable called 'age'. This variable can be accessed directly by the 'Dog' class, which inherits from 'Animal', but it cannot be accessed by any other class that does not inherit from 'Animal'. This ensures that the age of an animal can only be manipulated through methods defined in the 'Animal' class or its subclasses.The use of protected types fosters a sense of security in code design. It allows developers to expose only the necessary parts of a class while keeping sensitive information hidden from the outside world. For instance, if the 'Animal' class has a method to increment the 'age', this method can be made protected as well, allowing only derived classes to call it. This prevents external classes from accidentally or intentionally modifying the state of an object in an unintended way.Moreover, protected types can enhance code readability and maintainability. When a developer sees a protected type, they immediately understand that this member is intended for use within the class hierarchy. This clarity helps in understanding the relationships between classes and how they interact with each other.However, it is important to use protected types judiciously. Overusing them can lead to tight coupling between classes, making the codebase harder to manage. If too many classes depend on the protected type of a base class, changes to that base class could have widespread effects, potentially introducing bugs in multiple places. Therefore, while protected types provide flexibility, they should be implemented with caution to avoid creating a fragile code structure.In conclusion, the concept of protected type is fundamental in object-oriented programming. It serves as a mechanism for controlling access to class members, thereby protecting the integrity of data and promoting better software design practices. By understanding and utilizing protected types effectively, developers can create robust, maintainable, and secure codebases that stand the test of time. As programming continues to evolve, the principles behind protected types will remain relevant, guiding developers in their quest for clean and efficient code.

在编程领域，特别是在面向对象的语言中，protected type的概念在定义类成员的访问级别方面起着至关重要的作用。protected type是类的一个成员，它可以在其自身类和派生类中访问，但不能在这些上下文之外访问。这种封装对维护数据的完整性至关重要，并确保数据仅以受控的方式进行修改。为了说明这一点，考虑一个简单的例子，涉及一个名为“Animal”的基类和一个名为“Dog”的派生类。在“Animal”类中，我们可能有一个名为“age”的protected type变量。这个变量可以被继承自“Animal”的“Dog”类直接访问，但不能被任何不继承“Animal”的其他类访问。这确保了动物的年龄只能通过在“Animal”类或其子类中定义的方法进行操作。使用protected types可以增强代码设计的安全感。它允许开发人员仅公开类的必要部分，同时将敏感信息隐藏在外部世界之外。例如，如果“Animal”类有一个方法来增加“age”，这个方法也可以设置为protected，从而只允许派生类调用。这防止了外部类意外或故意地以非预期的方式修改对象的状态。此外，protected types还可以提高代码的可读性和可维护性。当开发人员看到一个protected type时，他们会立即明白这个成员是打算在类层次结构中使用的。这种清晰性有助于理解类之间的关系以及它们如何相互作用。然而，重要的是要谨慎使用protected types。过度使用它们可能导致类之间的紧密耦合，使代码库更难管理。如果太多类依赖于基类的protected type，对该基类的更改可能会产生广泛的影响，可能在多个地方引入错误。因此，尽管protected types提供了灵活性，但在实现时应谨慎，以避免创建脆弱的代码结构。总之，protected type的概念在面向对象编程中是基础。它作为一种控制类成员访问的机制，从而保护数据的完整性并促进更好的软件设计实践。通过有效理解和利用protected types，开发人员可以创建稳健、可维护且安全的代码库，经得起时间的考验。随着编程的不断发展，protected types背后的原则将继续保持相关性，引导开发人员追求干净高效的代码。