pure class
时间: 2023-08-17 22:11:07 浏览: 54
C知道: 纯类是指只包含成员函数和成员变量的类,没有任何继承关系或虚函数。纯类可以用来作为接口类或抽象类,它定义了一组接口或者纯虚函数,子类必须实现这些接口或者纯虚函数才能被实例化。纯类不能被直接实例化,只能作为基类来派生其他具体的类。在C++中,可以使用纯虚函数来实现纯类,只需在函数声明后加上"= 0"即可。例如:
```cpp
class PureClass {
public:
virtual void pureFunction() = 0;
};
```
在这个例子中,`PureClass` 是一个纯类,它包含了一个纯虚函数 `pureFunction()`。任何继承自 `PureClass` 的子类都必须实现 `pureFunction()` 函数才能被实例化。
相关问题
pure virtual
Pure virtual is a term used in object-oriented programming that refers to a virtual function that is declared in a base class, but has no implementation or definition in the base class. Instead, the function is implemented in the derived classes that inherit from the base class.
A pure virtual function is declared in the base class using the syntax:
```
virtual return_type function_name(arguments) = 0;
```
The "= 0" at the end of the function declaration indicates that the function is pure virtual and has no implementation in the base class.
A class that contains one or more pure virtual functions is called an abstract class. An abstract class cannot be instantiated, meaning that you cannot create an object of that class. Instead, you must create an object of a derived class that implements the pure virtual functions.
The primary use of pure virtual functions is to create a common interface for a group of related classes that have different implementations of the same behavior. By defining a pure virtual function in a base class, you can ensure that all derived classes provide an implementation for that function. This allows you to write generic code that works with objects of any of the derived classes.
pure admin
Pure Admin是一款开源免费且开箱即用的中后台管理系统模板。它包含了大量现成的页面模板,可以直接使用。同时,Pure Admin还提供了精简版,适合需要高度自定义开发的场景。这个模板使用了Vue3、Vite、Element-Plus、TypeScript、Pinia和Tailwindcss等主流技术栈进行开发。通过使用Pure Admin,我们可以快速搭建企业级中后台系统,并且内置了丰富的代码示例和基于Node.js的后端开发源码,提供了现成的开箱解决方案。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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