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This article mainly introduces "how to use Python to achieve meta-mode". In daily operation, I believe many people have doubts about how to use Python to achieve meta-mode. The editor has consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to use Python to achieve meta-mode". Next, please follow the editor to study!

Sample code

The first is the Flyweight related classes:

Flyweight mainly defines an operation method suitable for external state, and then ConcreteFlyweight implements this method. The external state is superimposed on the output of the object in the code; another UnsharedConcreteFlyweight is a non-shared representation class, whose output only outputs the state of the object itself.

If it is only so far, it does not have much to do with Heng Yuan, and then there is the key:

Each object is assigned a different external state in the code. Next is the program output:

The first two outputs come from the same object, but output different external states, and the last three outputs come from different objects.

Effect.

The use of shared meta-mode can save the waste of memory space caused by different users holding the same data, and the more such objects, the more obvious the effect. However, it should be noted that managing external state also requires the cost of execution time and memory space, which needs to be determined after calculating the gains and losses in actual use.

Another situation is that due to the need for software to share objects among users, the sharing meta-pattern can be used as an option for implementation. Of course, in this case, efficiency and space are not the first factor.

At this point, the study on "how to use Python to achieve meta-pattern" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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