In some software systems, we need to deal with complex business rules, syntax parsing or expression evaluation. In order to simplify the parsing and processing of these logics, the Interpreter Pattern provides an elegant solution. The Interpreter Pattern is often used to build a custom language or simplify complex rule engines, such as mathematical expression evaluation, command parsers, configuration file parsing, and other scenarios. This article will introduce the concept of the Interpreter Pattern, the difference from other patterns, and the problems it solves...

In software development, we often encounter the need to save the historical state of an object so that it can be restored to a specific state when necessary. For example, a text editor needs to support undo and redo functions, and a game needs to record the player's save files. In order to elegantly implement state preservation and restoration, the Memento Pattern provides an excellent solution. This article will introduce the concept of the Memento Pattern in detail, the difference between it and other design patterns, the problems it solves, its implementation in Golang, and how to use it in...

In software development, it is a common requirement to handle behavior changes when an object changes state. In order to avoid using complex conditional judgments in the code, the State Pattern provides an elegant solution. Through the State Pattern, we can encapsulate the behaviors of different states into independent state classes, making state management clearer and more flexible. This article will explore the concept of the State Pattern, the difference from other patterns, the problems it solves, implementation examples in Golang, and practical applications of the State Pattern.

In software development, we often encounter situations where we need to dynamically select algorithms or behaviors. In order to avoid using a large number of conditional statements (such as if-else or switch-case) in the code, the Strategy Pattern provides an elegant solution. Through the Strategy Pattern, we can encapsulate algorithms or behaviors into independent classes and switch them freely at runtime. This article will introduce the concept of the Strategy Pattern in detail, the difference between it and other similar patterns, the problems it solves, Gol…

In software development, when the overall structure of some business logic is the same, but the implementation of some steps needs to be flexibly adjusted, the Template Method Pattern can provide an elegant solution. It defines a common framework for the algorithm and leaves part of the implementation to the subclasses, making the code more flexible and easy to expand. This article will introduce the concept of the Template Method Pattern in detail, the difference between other patterns, the problems it solves, implementation examples in Golang, and practical development...

In software development, we often need to traverse elements in data structures, such as collections, arrays, or linked lists. In order to avoid coupling the traversal logic inside the data structure and improve the readability and scalability of the code, the Iterator Pattern came into being. This article will introduce in detail the concept of the Iterator Pattern, the difference from other patterns, the problems it solves, and how to implement and use the Iterator Pattern in Golang. What is the Iterator Pattern?

In complex software systems, we often need to encapsulate requests as objects to support functions such as parameterization, cancellation, and queuing of requests. The Command Pattern provides an elegant solution to this requirement. It is a behavioral design pattern that decouples requests from executors by encapsulating requests as objects. This article will introduce the concept of the Command Pattern, the difference from other similar patterns, the problems it solves, its implementation in Golang, and the precautions in actual development. …

In complex software systems, we often encounter a scenario where when the state of an object changes, other objects need to be notified so that they can react accordingly. If dependencies are established directly between these objects, the coupling of the system will increase significantly and the code will become difficult to maintain. The Observer Pattern helps us solve this problem elegantly through the publish-subscribe method. This article will introduce the concept of the Observer Pattern, the difference between it and other similar patterns, and how to solve it.

In complex systems, objects often need to communicate with each other frequently. If objects directly reference and depend on each other, the system will become complex and difficult to maintain. In order to solve this coupling problem, the Mediator Pattern came into being. The Mediator Pattern introduces an independent mediator object to manage the interaction between objects, thereby reducing the direct dependency between objects and making the system more flexible. This article will introduce the concept of the Mediator Pattern, the difference from other similar patterns, and the problems it solves.

In the development of complex systems, we often need to face changes in multiple dimensions. The Bridge Pattern is a structural design pattern whose main purpose is to separate the abstract part from the implementation part so that they can change independently. Through the Bridge Pattern, developers can decouple functions in different dimensions, making the system more flexible and scalable. This article will introduce the concept of the Bridge Pattern, the difference from other similar patterns, the problems it solves, implementation examples in Golang, and practical applications...