使用原型模式动态配置app(configuring app dynamically using prototype pattern)

 我正在阅读GoF书中的原型模式。 这是文本片段 
 
 
 
 动态配置应用程序：某些运行时环境允许您动态地将类加载到应用程序中。 原型模式是利用C ++等语言开发此类工具的关键。 
 
 
 想要创建动态加载的类的实例的应用程序将无法静态引用其构造函数。 相反，运行时环境在加载时会自动创建每个类的实例，并向原型管理器注册。 然后，应用程序可以向原型管理器询问新加载的类，没有的类;或者与程序一起使用 
 
 
 我上面的问题 
 
 
 
 作者的意思是“想要创建动态加载类的实例的应用程序将无法静态引用其构造函数”？ 例如，如果我们使用动态链接库，我仍然可以使用new创建对象，那么作者的意思是什么，我们将无法静态引用构造函数？ 
 
 
 请求举例说明如何使用原型模式动态地利用加载类应用程序。 
 

I am reading about prototype pattern by GoF book. Here is the text snippet
 
 
 
Configuring an application with classes dynamically: Some runtime environments let you load classes into an application dynamically. The prototype pattern is the key to exploiting such facilities in a language like C++.
 
 
An application that wants to create instances of a dynamically loaded classes won't be able to reference its constructor statically. Instead, runtime environment creates an instance of each class automatically when it's loaded, and registers with a prototype manager. Then the application can ask the prototype manager for newly loaded classes, classes that weren't ;omled with the program orginally
 
 
My questions on above
 
 
 
What does author mean by "An application that wants to create instances of a dynamically loaded classes won't be able to reference its constructor statically" ? For example if we use dynamic link library I can still create object using new so what does author mean by we won't be able to reference constructor statically?
 
 
Request to give an example how prototype pattern is used to exploit load classes application dynamically.
 

原文：https://stackoverflow.com/questions/28214281