Programmer Group

preface This game can be regarded as a game of Unity chicken. In the real sense, it follows the tutorial from beginning to end and steps into the pit step by step to complete it. This blog is mainly used to summarize and learn the game project. Well, let's start. (PS: this game is based on the angry birds tutorial of Siki college. Station b add ...

Database connection pool Concept: in fact, it is a container (Collection) for storing database connections After the system is initialized, the container is created, and some connection objects will be applied in the container. When the user accesses the database, the connection objects will be obtained from the container. After the user ...

home pagespecial columnjavaArticle details0JDK growth 19: ReenranctLock (2) AQS underlying principle of locking into the teamLuxuriant Published 16 minutes agoIn the previous section, you should have learned about the three AQS based widgets state, owner and queue at the bottom of ReentrantLock. We also learned about the process of locking and ...

preface It seems that the person described in the background of each topic is a role in a certain film. It seems that it is very tragic (emotional). Then I only know T1 berries. It's really miserable... T1 berry conscience Problem solving ideas First, the answer is only related to the sum of \ (w \), so the problem becomes to find the size of e ...

Variable interpretation explainer.excepted_value The expectation of prediction results is sometimes the mean value of a batch of data prediction results?? Sub tags. If there are multiple categories, each category will have an expected value. When analyzing the shap value, select the excluded of the corresponding tag_ value When interpreting t ...

Reading notes on the core principles of spring 5 and handwriting practice of 30 classes catalogue PART1 is written in front of the nonsense PART2 software architecture design principles PART3 is an example of refactoring code PART1 is written in front of the nonsense The example in the article is adapted and simplified to the original ...

Unidbg linker part source code analysis (Part 2) Unidbg linker part source code analysis (Part 2) outline align resolveLibrary VirtualModule initFunctions call summary outline In the previous article, we analyzed the loadInternal method in the AndroidElfLoader class. It's very long and large. You can't read it until you bear it. In the ...

1, Introduction to DevOps The word DevOps comes from the combination of Development and Operations. It attaches great importance to the communication and cooperation between software developers and operation and maintenance personnel, and makes software construction, testing and release more fast, frequent and reliable through automated proces ...

1 false Awakening What is false awakening? Refer to a question and answer on the Internet: Question: what are the reasons for false wakeup in java multithreading? The definition found on the Internet means that the thread wakes up without calling notify() and notifyAll(), which is a false wake-up. What causes this? Answer: spurious wakeup ...

Reprint: https://zhuanlan.zhihu.com/p/76237595 Case1: screenshot (async () => { const browser = await puppeteer.launch(); const page = await browser.newPage(); //Set visible area size await page.setViewport({width: 1920, height: 800}); await page.goto('https://youdata.163.com'); //Screenshot of the entire page a ...