Programmer Group

This article is excerpted from "design patterns should be learned this way"1 UML class diagram of command patternThe UML class diagram of the command pattern is shown in the following figure.2 reconstruct the player control bar using command modeIf we develop a player, the player has playback function, drag progress bar function, stop ...

I often envy others for having a beautiful navigation home page. I want to build one myself, but I can only leave tears without technology. Today, I accidentally saw an open source Home page item , it looks very beautiful and can be highly customized. It also provides a docker image, which is very convenient to install.Just after the promotion ...

preface So far, the Gradle foundation and Kotlin foundation have been explained. Therefore, in this article, we will explain in detail the construction optimization of Gradle and how to migrate from Groovy to KTS! Don't say much, just start! 1. Gradle build optimization Optimization is all about configuration. Just go through it quickly! Fo ...

1. Three methods of creating threads Inherit Thread class [key] Inherit the Thread class, override the run() method, and call start to start the ThreadNot recommended: avoid the limitation of OOP single inheritance //Method 1 of creating a Thread: inherit the Thread class, rewrite the run() method, and call start to start the Thread ...

Learning resources: Pull hook Education Case Title: encapsulation and testing of People class Program to realize the encapsulation of People class. The features include: name, age and nationality. It is required to provide a method to print all featuresThe PeopleTest class is programmed. The main method uses the parametric method to construct ...

This article will use C language to realize a simple minesweeping game. (the full code is at the end of the article) ① Test logic of the game (its code is stored in test.c); ② The implementation logic of the game (its code is stored in game.c); ③ Declaration of game implementation functions (the declaration of each function is stored in game ...

There are five new features: Logical assignment operator??? =&&= And||=Number separator_Promise.any & AggregateErrorString.prototype.replaceAllWeakrefs & finalizationregistry object 1. Logical assignment operator??? =&&= And||= ??= &&= And||= a||=b; // a=a||b; Equivalent to: a = a? a : b a&&=b; ...

Overview of object-oriented thinking Java language is an object-oriented programming language, and object-oriented idea (OOP) is a programming idea. Under the guidance of object-oriented idea, we use java language to design and develop computer programs. The object here generally refers to all things in reality, and each thing has its own attr ...

preface This article is mainly about some classic related to linked lists in data structures OJ At the end of the paper, we also provide OJ The specific website of the question is for everyone to practice OJ I hope you can have a deeper understanding of the linked list. Finally, it is not easy to create. I hope you can give encouragement, prai ...

Unity LitJson-based archiving system: Description: Recently I was playing my first game because I used to play it casually, so it wasn't very deep. Yesterday I saw LitJson's data persistence, and today I'm trying to do it. From the morning to now, although the code may be insufficient, at least the function is implemented, and further modi ...