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Thank you for your reference- http://bjbsair.com/2020-04-01/tech-info/18392.html One of the application scenarios of Netty in the project: the message push function can be used to push messages to all users, or to specify a user. The spring boot project is created. The background server uses Netty technology, and the front page uses WebSocket t ...

First, thinking class Child : public Parent{ }; In the code, the colon represents the inheritance relationship, and the Parent represents the inherited class. What is the meaning of public? Programming experiment: #include <iostream> #include <string> using namespace std; class Parent { }; class Child_ ...

SpringBootApplication annotation @Target(ElementType.TYPE) @Retention(RetentionPolicy.RUNTIME) @Documented @Inherited @SpringBootConfiguration @EnableAutoConfiguration @ComponentScan(excludeFilters = { @Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class), @Filter(type = FilterType.CUSTOM, classes = AutoConfigu ...

Domain event publishing is a notification issued by a domain object to let other objects know that they have already processed an operation. Event publishing tries to decouple their own objects from external objects at the code level and reduce technical code intrusion. 1. Manually Publish Events // Entity Definition @Entity public class Depart ...

This blog post mainly explains the advanced features of list s, including aliasing, mutability, and cloning.These three attributes require special attention when assigning values.This note and code comes from MIT's public session, Lesson 5. <Introduction to Computer Science and Programming in Python>. aliasing For simple data t ...

Single example implementation I A very simple implementation public class Singleton { public static Singleton instance = new Singleton(); private Singleton() { System.out.println("Singleton is create"); } public static Singleton getSingleton() { return instance; } } One disadv ...

This blog uses a slightly complex case to compare the differences between AOP programming based on XML configuration and AspectJ annotation configuration. Related to the introduction of packages and other Spring AOP programming preparation, please refer to other blog posts in the small edition. Case requirements: Write a simple calculator to re ...

[SpringBoot WEB series] summary of asynchronous request knowledge points and usage postures In servlet 3.0, asynchronous request support has been introduced, but in actual business development, there are not many children's shoes that may have used this feature? As a literacy and usage tutorial for asynchronous requests, this blog post will ...

1, introduction Asynchronous programming is too important for the Javascript language. The execution environment of Javascript language is "single thread". If there is no asynchronous programming, it cannot be used at all. It must be stuck. Now I'll focus on how the Generator function performs asynchronous op ...

Function foundation Function: a function is an organized, reusable code segment used to implement a single or associated function. Function can improve the modularity of application and the reuse rate of code. Python provides many built-in functions, such as print(). You can create your own functions, which are called user-defined functions. De ...