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This article focuses on "what are the details of the hidden products of web design patterns". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let the editor take you to learn "what are the details of the hidden product of the web design pattern"?

Hide product implementation details

Suppose we have a LED display system that provides a tool library through which users can draw on the LED screen. The class diagram is roughly as follows:

Client can create LedPen or LedBrush objects and set the color and fill mode as needed. Then after creating the LedContext object and setting LedPen and LedBrush, you can draw lines or rectangles. All this is no different from drawing on the Windows operating system.

But there is a problem. Exposing LedPen,LedBrush,LedContext to users in C++ means exposing the header file of the class. These header files may contain this technical secret, for example, these classes actually use the class library of another software company, and so on.

The way to solve these problems is to use C++ 's polymorphic mechanism to hide specific tool classes.

There are two changes: one is that three other concrete classes, TvPen,TvBrush and TvContext, are designed. The other is to turn a simple factory into an abstract factory.

We can switch representational factory classes in the least expensive way to generate another new class that has the same interface but may have different actions. If you like, you can also generate a third set of products and a fourth set of products.

At this point, I believe that everyone on the "web design pattern hidden product details are what" have a deeper understanding, might as well to actual operation of it! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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