In object-oriented systems, we often need to perform different operations on complex data structures. If the operation logic is embedded directly inside the data structure, it will not only increase the complexity of the class, but also make the code difficult to maintain and expand. The Visitor Pattern provides an elegant way to define new operations for these structures by separating operations from data structures. This article will introduce the concept of the Visitor Pattern in detail, the difference from other patterns, the problems it solves, and implementation examples in Golang...

In a complex system, some requests need to be processed by multiple objects, and these objects may have different processing logic. If we use conditional statements in each object to handle these requests, it will not only increase the complexity of the code, but also make the system difficult to maintain. The Chain of Responsibility Pattern elegantly solves this problem by passing requests along the processing chain to achieve decoupling between objects. This article will introduce the Chain of Responsibility Pattern in detail...

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 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 software development, the Decorator Pattern is a structural design pattern that improves the flexibility and scalability of the code by dynamically adding new functions to objects. Unlike inheritance, the Decorator Pattern achieves functional enhancement by combining objects, and multiple decorative functions can be selectively superimposed at runtime. This article will introduce the concept of the Decorator Pattern in detail, the difference between it and other similar patterns, the problems it solves, its implementation in Golang, and the precautions in practical applications. …

In complex system development, we often encounter scenarios where we need to process collections of objects. These objects can be either independent individuals or combinations of other objects. In order to manage and operate these objects more efficiently, we can use the Composite Pattern. This article will introduce in depth the concept of the Composite Pattern, the difference from other similar patterns, the problems it solves, its application in actual development, precautions, and implementation examples in Golang. What is the Composite Pattern? The Composite Pattern…