Java multithreading - ReentrantReadWriteLock

1. Introduction to read-write lock There is such a scenario in reality: there are read and write operations on shared resources, and write operations are not as frequent as read operations. When there is no write operation, there is no problem for multiple threads to read a resource at the same tim ...

Posted by underparnv on Sun, 23 Feb 2020 03:04:35 -0800

Inheritance of JavaScript constructors

Legend https://www.xs86.com In the previous article, we talked about JS objects, constructors, and prototype patterns. This article discusses the inheritance of JavaScript Inheritance is one of the most popular concepts in OO language. Many OO languages support two kinds of inheritance: interfa ...

Posted by Trenchant on Sat, 22 Feb 2020 23:37:18 -0800

The principle of react router DOM

Implement rendering different components according to different paths There are two ways to achieve this: HashRouter: it uses monitoring hash change (there is an event hashchange) to realize routing switching. It is a routing container, rendering sub components, and passing (Context context transfe ...

Posted by subrata on Sat, 22 Feb 2020 20:17:50 -0800

Get a thorough understanding of Auto-assembly and Autoowired in Spring

Untitled 1. Automatic assembly When Spring assembles Bean properties, it is sometimes quite clear that a reference to a Bean needs to be assembled to the specified properties.For example, if there is only one Bean of type org.mybatis.spring.SqlSessionFactoryBean in our application context, then any ...

Posted by 990805 on Sat, 22 Feb 2020 16:17:00 -0800

The architect's internal mental skill is just a detailed explanation of the prototype model that he has only heard about

1, Application scenario of prototype mode You must have met such a code scenario with a large number of getter and setter assignment scenarios. For example, code snippets like this: private SafetyStockMessage createKafkaMessage(SafetyStock safetyStock, HttpServletRequest request) { SafetyStockMessage safetyStockMessage = new SafetyStock ...

Posted by aleksandra on Sat, 22 Feb 2020 05:06:16 -0800

Week 1 - initial PHP

Lab1.1 - Print Statements I picked up what I thought I had something to say and recorded it. <?php // put your code here echo 'Hello World!'; echo'<br>'; //Line feed echo 'You can join strings '.'by using the dot'; //Connect echo '<br>'; ...

Posted by noodle on Sat, 22 Feb 2020 02:28:28 -0800

Node.js Foundation: Chapter 3

Chapter 1: basic concepts of server 1.1 - composition of the website Web applications are mainly divided into two parts: client and server. Client: the part that runs in the browser is the interface program that the user sees and interacts with. Build using HTML, CSS, JavaScript. Server side: the part running in the server, responsible for sto ...

Posted by ctsiow on Sat, 22 Feb 2020 01:43:32 -0800

Encapsulation, implementation and optimization of display layer (no animation + css3 animation + js animation)

showhide.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>showhide</title> <link rel="stylesheet" href="../css/base.css"> <style> body{ width:400px; margin:0 auto; } button{ width:50%; ...

Posted by chalexan on Fri, 21 Feb 2020 22:43:51 -0800

Common design patterns in Java framework

Article directory Preface 1. What is design pattern 2. Java reflection technology 2.1 building objects by reflection 2.2 reflection method 2.3. Example 3. Dynamic agent mode 3.1. JDK dynamic agent 3.2 CGLIB dynamic agent 3.3 interceptor 3.4. Example 4. Responsibility chain model 4.1. Example 5. O ...

Posted by rickaclark on Fri, 21 Feb 2020 20:55:30 -0800

Breakthrough CRUD universal tree tool class encapsulation

0. You may be able to gain after learning this article Experience the process of gradual optimization and perfection of a tree tool from the beginning Design and implementation of tree tool package Finally, we get a ready to use tree tool source code Students who have some knowledge and use of the front-end tree components can dir ...

Posted by ale8oneboy on Fri, 21 Feb 2020 02:26:49 -0800