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catalogue Memo mode Game character status recovery problem Traditional solution for game character recovery Traditional way of problem analysis Basic introduction to memo mode Schematic class diagram of memo mode Game character restore state instance Notes and details of memo mode Memo mode Game character status recovery problem ...

1. Bridging mode Bridge is used to decouple abstraction from realization, so that they can change independently. This type of design pattern belongs to structural pattern, which realizes the decoupling of abstraction and realization by providing a bridge structure between abstraction and realization. This pattern involves an interface as a br ...

Note source: Shang Silicon Valley Java design pattern (illustration + framework source code analysis) Responsibility chain model 1. Purchase approval items of OA system For the purchase approval project of school OA system, the requirements are 1) Purchaser purchases teaching equipment2) If the amount is less than or equal to 5000, it ...

Builder pattern This blog will introduce the builder mode. The builder mode is a more complex creative design mode. Compared with the factory mode, the builder mode pays more attention to the assembly process of an object. Generally, the builder mode is suitable for the creation of complex objects and is often used in conjunction with the ...

The beginning is still like that. Please look down What is the combination mode? Combination mode, which combines objects into a tree structure to represent the "part whole" hierarchy. (Baidu Encyclopedia) In fact, the combination pattern, also known as the partial whole pattern, is used to treat a group of similar objects as a sin ...

15 singleton mode 15.1 init and new methods Perform steps Instantiate an object, execute the new method first, and return the object in the new methodThen call the init method 15.1.1 __init__ method __ init__ Is the construction method In fact, the first method called is the new method, but in most cases, the new method is not used clas ...

1. Prototype mode Prototype Pattern is used to create duplicate objects while ensuring performance. This type of design pattern is a creation pattern, which provides the best way to create objects. This pattern implements a prototype interface that is used to create a clone of the current object. This pattern is used when the cost of directly ...

The design pattern interview strategy and factory pattern replace the complex ifelse in the business scenarioI'm fat brother, an unprofessional interviewer!I am embarrassed, a young rookie actively looking for a job!What Xiaobai fears most in the interview is that the knowledge asked by the interviewer is too general and he can't quickly locate ...

Practice of decorator design pattern in business Decorator design pattern, as its name implies, is a layer of decorative logic on the original logic, so as to realize the elegant expansion of basic logic without if else. The decorator's design pattern is used in the InputStream in the JDK source code. So as to modify InputStream through Buffere ...

Design patterns (11 common) Seven principles Single principle One class, one responsibility Opening and closing principle Expand opening and modify closing Richter substitution As a supplement to the principle of opening and closing, where the father appears, the subclass can certainly appear Principle: Abstract implementation Dependen ...