Software System
Software System
Talking about the use of front and back template engines in the Web
Software System
Flutter basics-020-FloatingActionButton
Software System
4 basic sorting algorithms
Software System
Go language actual combat tutorial backstage management page statistical function development (2)
Software Testing
Software Testing

How to test ChannelHandler?

... Noah
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Software Testing

Commonly used tips for Mac novices to play with the terminal! !

... Lucas
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Software Testing

Recommend a powerful Android OpenGL ES debugging tool

... Adeline
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Software Testing

Some insights on how to do interface testing step by step

... Carter
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Software Testing

Android unit testing (7): MVP and unit testing

... Daniel
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Software Testing

Tutorial and summary of ADB toolkit installation under WIN10--201809

... Ashley
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Software tools
Software Tools

React-native integrates Umeng statistics function android

Download the file ( developer.umeng.com/sdk ) After downloading, unzip it, just use this one, there are all in it android 1. Put the two jar packages in the android file directory in the downloaded file Add to the project android/app/libs, create a new one without libs 2. Add the jar package to android/app/build.gradle, pay attention to the name inside to be consistent with the downloaded jar package name 3. Open AndroidManifest.xml, add 4. Put these downloaded interactive Java files into the pr

... Hannah
schedule 2 min read
Software Tools

Know the technical implementation details of V (React V)

Purpose: Analyze the possible technologies for segmenting V functions. For example, the current popular render props technology V computing function segmentation technology is immature, because we lack understanding of the separability principle of logical computing behavior class MouseTracker extends React.Component { constructor(props) { //1 super(props); this.handleMouseMove = this.handleMouseMove.bind(this); //2 this.state = { x: 0, y: 0 }; } handleMouseMove(event) { //3 this.setState({ //4

... Cooper
schedule 2 min read
Software Tools

React technology reveals 2-2 double cache mechanism

This article is excerpted from the secrets of React technology Through the study in the previous section, we understand Fiberwhat it is and know that we Fiber can save the corresponding DOM . Correspondingly, what Fiber constitutes Fiber corresponds DOM . So how to update DOMit? This requires the use of a technique called "double buffering". What is "double buffering" When we use canvasdrawing animation, we will call to ctx.clearRectclear the previous frame before drawing each frame . If the ca

... Miles
schedule 4 min read
Software Tools

Realization of simple SMS verification function

I believe that many friends will add the function of SMS verification when doing the three-way login. Recently, I was assigned to realize this demand. I am a newbie, and I specially searched for information on the Internet. At present, I use a lot of Dahan. Cloud Communication also There is the smssdk of MOB. In contrast, I finally chose a completely free MOB product to try it out. Here are some of my experiences in using the SDK. I hope to see some suggestions from the gods, and just be careful

... Thomas
schedule 5 min read
Software Tools

01 Front-end growth diary-first understanding of git

git basic commands One, ls use "Ls" can view those files in the current directory Create a new "git-demo-1" directory on the desktop, and create files "css, images, index.html, js" in the directory $cd ~/Desktop $cd git-demo-1 $ls After typing "ls" in the terminal, I get the following result css images index.html js "ls -a" can view all files in the current directory including hidden files Type "ls -a" in the terminal to get the following results . .DS_Store css index.html .. .git images js "ls

... Jason
schedule 5 min read
Software Tools

Concurrent queue processing system implemented by Swoole and Redis

Since PHP does not support multi-threading, as a complete system, many operations need to be completed asynchronously. In order to complete these asynchronous operations, we have built a Redis-based queue task system. As we all know, a message queue processing system is mainly divided into two parts: consumers and producers. In our system, the main system acts as a producer and the task system acts as a consumer. The specific workflow is as follows: 1. The main system pushes the name of the task

... Ruby
schedule 7 min read
Database Technologies
Database Technologies

Handler message mechanism is explained in detail, only this one, I will not forget it in the future

The Handler message mechanism is a very important point of knowledge in Android. Before, many students on the Internet shared a lot of blogs introducing the handler mechanism, so why should I write another one? Because the blogs I read found that the analysis was dry and hard to remember. So, this time I took the time to make a timing diagram of the message mechanism, in order to see the picture for the right brain to remember, and never forget it! ! ! Ok, let s not talk too much nonsense, first

Database Technologies

Implementation of Redis database and key expiration

Original address: www.xilidou.com/2018/03/20/... The previous article explained the data structure of Redis. This time you can look at how Redis stores data as an in-memory database. And how the key expired. Reading this article you will know: Redis database implementation Redis key expiration strategy Implementation of the database Let's look at the code first server.h/redisServer struct redisServer{ ... // db redisDb *db; //db int dbnum; ... } Look at the code of redisDb: typedef struct redisD

Database Technologies

Take you to understand the exception handling mechanism in Java

@ TOC Exception handling 1 Introduction If a user loses user data due to a program error or some external environmental influences during the running of the program, the user may no longer use the program. In order to avoid such things from happening, at least the following points should be done : Notify users of errors Save all work results Allow users to exit the program in a proper manner So, Java uses a technique called exception handling error trapping mechanism of the process. The most fun

Database Technologies

The leftover old man hummed "Golden Cooper" and brought HarmonyOS Device development experience

HarmonyOS Device development experience based on Hi3861 platform Hello everyone, I am a non-famous Copy Siege Lion who is not doing my job properly. This article should be the last "Hello, World" of Copy Siege Lion in 2020-the actual development of IoT applications based on the Hi3861 development board of Harmony OS. Copy siege "Hello World" Lion of the road is never easy, try to open the (copy) hair (Tony) networking applications are also quite a few detours, and finally ran through the buzzer

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