Programmer Group

preface In the last article   Spring transaction usage details   Described in detail in   Spring   Let's take a look at the usage process of transactions today   Spring   How are transactions implemented, such as   Spring   What does the transaction do during initialization, spring   How transaction ...

Because the Diff algorithm calculates the difference of virtual DOM, first pave a little bit of virtual DOM, understand its structure, and then uncover the veil of Diff algorithm layer by layer, in simple terms, to help you thoroughly understand the principle of Diff algorithm Understanding virtual DOM Virtual DOM is simply to use JS objects ...

Let's look at the picture first to understand the general process and what to do initialization During the initialization of new Vue, the data props and data of our components will be initialized. Since this article mainly introduces the response type, I won't explain it too much. Let's take a look at the source code Source address: Src / ...

springboot version 2.5.5 Debug Roadmap Many words are tears. Let's look at the picture. Let's start with run After using Springboot for so many years, what has this run() method done? @SpringBootApplication public class SpringbootDemoApplication { public static void main(String[] args) { SpringApplication.run(SpringbootD ...

2021SC@SDUSC introduction In a oj system, the core content is the judgment part. Whether it is a real user or a question judging machine, to detect whether the code written by the user is correct, you only need to compile the source file where the running code is located, and then compare whether the program output result is the same as the s ...

Seek medical advice Do you want to know the source code of cesium?Have you ever lost your way in the huge source code?How does cesium render the scene step by step? Go straight to the subject 1. The origin of all things - time //Clock.js Clock.prototype.tick = function () { var currentSystemTime = getTimestamp(); var currentTime = Julia ...

edition JDK8(JDK1.8) Collection interface source code focus 1. The root interface in the set hierarchy. A set represents a group of objects called its elements. Some sets allow repeated elements, while others do not. Some are ordered and some are disordered. 2. The interface class defines various specifications, including method specification ...

Source code analysis of LockSupport(park/unpark) park method park() public static void park() { UNSAFE.park(false, 0L); } park(Object blocker) public static void park(Object blocker) { Thread t = Thread.currentThread(); setBlocker(t, blocker); UNSAFE.park(false, 0L); setBlocker(t, null); } blocker is used to record w ...

Correlation constant parsing bucketCntBits = 3 // It represents bit bucketCnt = 1 << bucketCntBits // Represents a bucket(bmap) with a maximum storage of 8 key s loadFactorNum = 13 loadFactorDen = 2 // The load factor is calculated from these two factors (the load factor is related to when to trigger capacity expansion) maxKeySize ...

brief introduction In the previous article, we found a critical path code for converting logical SQL to real SQL. In this article, we will explore some details of statement parsing generation based on the previous article Source code analysis The code generated by the key parsing of the statement is as follows: @RequiredArgsConstructor publ ...