Articles
android

What you need to know about vscode plugin development steps

Introduction When developing small programs, because of business needs, I came into contact with vscode plug-in development. Because I have no experience in developing plug-ins from scratch, I just stepped on the pit while checking the information. After some toss, I finally completed a simple plug-in. Although the plug-in function is simple, all the steps of developing a plug-in need to be walked through. So it is very helpful to understand the development of plug-ins. Since it is the first tim

... Hannah
schedule 10 min read
android

Super practical! 18 shell scripts out of the box, ready to go~

1. Detect the consistency of the files in the specified directories of the two servers #!/bin/bash #################################### Check the consistency of the files in the specified directories of the two servers ################################### #By comparing the md5 value of the files on the two servers, the purpose of checking consistency is achieved dir=/data/web b_ip=192.168.88.10 # Traverse all the files in the specified directory and use them as a parameter of the md5sum command t

... Hunter
schedule 19 min read
android

2020 How do machines understand the world (2)

This is the text I was involved in a more challenging day 24, the event details see: more text challenge In the analysis of Alexnet by Professor Li Hongyi, some patterns and colors were identified in the figure. In fact, we input the image in the first layer. If the second layer of filter takes the first layer of filter as input, it is input to the feature layer. from keras.applications Import VGG16 from keras Import backend AS K Import matplotlib.pyplot AS plt copy the code Keras provides class

... Logan
schedule 6 min read
android

This article is enough for you to understand deep copy and shallow copy (detailed)

Write in front If you find it helpful, remember to follow and like, thank you very much for your support. In any language, there are actually the concepts of shallow copy and deep copy, and Java is no exception. When copying an existing object, there is a distinction between shallow copy and deep copy. They are very different in actual use. If they are confused, it may cause some difficult to troubleshoot problems. Data types in Java are divided into basic data types and reference data types. Fo

... Camden
schedule 15 min read
android

Rewrite personal website for the third time, share some thoughts

"This article has been summoned to participate in activities of a good text, click to see: the back-end, front-end dual-track large contributors, 20,000 yuan prize pool waiting for you to challenge! " Preface Reading timeBrainpowerPre-knowledge10min30%React Recently, I updated a wave of personal homepages, and just organized an article to share some thoughts. This article will talk about the implementation ideas of each part of the website, as well as some of my ideas and ideas on the design. If

... Bennett
schedule 25 min read
coder_life

[Python] Python Game-Snake Adventure

Article Directory I. Introduction I want to share some knowledge and experience with you, and hope that your favorite friends can like, collect and follow, haha. 2. Snake Snake Adventure Mini Game 1. Introduction to the game 1.1 Game operation and game rules (1) After the game starts, use the up, down, left, and right keys on the keyboard to control the snake to move to find food; (2) Each time a gluttonous snake eats a piece of food, its body length will increase by one unit; (3) In normal mode

... Brandon
schedule 17 min read
coder_life

Summary of commonly used containers in high concurrency scenarios

This is the 13th day that I participated in the Wenwen Challenge. For details of the event, please see: Wenwen Challenge Commonly used containers A few days ago, I walked through the code with my colleagues xhf and zm. The function is to reduce the overhead of creating FTP frequently. I implemented an FTP pool with threads notify and wait. The suggestion at that time was to use java's own thread collection to achieve it may be more efficient. This article Sort out JDK's own thread-safe collectio

... Eli
schedule 17 min read
coder_life

How to include the level of accessibility testing in your process

When building a website or application, accessibility testing is critical to ensure that what you build will work for all users. This includes users with disabilities, as well as people with temporary and situational restrictions (such as a colleague who broke his arm while skiing, or a customer who has a bright light on the screen when using a mobile phone outdoors). We will share how to "layered" accessibility testing by using various tools and methods at different stages of the digital produc

... Avery
schedule 18 min read
coder_life

Webpack5.0 learning summary-basic articles

Preface The scaffolding that the Vue project has always used for development, I know very little about the black box of Webpack, and I am always confused when encountering problems, so I learned it more completely after the release of Webpack5.0. This article summarizes the learning results. The overall outline is shown in the figure below. This article is the basic article. For the advanced article, please click the portal Webpack5.0 learning summary-advanced article . Meet Webpack What is Webp

... Avery
schedule 23 min read
coder_life

Build a JumpServer bastion machine to manage tens of thousands of game servers

The article is a bit long, please read it patiently! 1 Overview of Jumpserver Bastion-Deploy Jumpserver Operating Environment 1.1 Overview of Springboard The springboard is a server, and the development or operation and maintenance personnel must first log in to this server in a unified manner during the maintenance process, and then log in to the target device for maintenance and operation. The shortcomings of the jumper: it does not realize the control and audit of the operation behavior of th

... Max
schedule 16 min read
dev_tools

What is the taste of syntactic sugar in Java

Java provides a variety of different flavors of syntactic sugar. Each flavor of sugar has different eating methods and magical powers. Which flavors of sugar do you know? Let's have a taste together Generics and type erasure Generics in Java only exist in the compilation stage, because the generic types are checked only during compilation. In the runtime, there is actually no concept of generics. After javac is compiled, the generics are already Erased. Example 1-Determine the bytecode object p

... Molly
schedule 15 min read
dev_tools

Net Core conditional statements are converted to Lambda expressions

using System; using System.Collections.Generic; using System.Linq; using System.Linq.Expressions; using System.Text; namespace CommonHelper { /// <summary> /// <see cref="Expression"/> parser. /// </summary> /// <typeparam name="T"> </typeparam> public class ExpressionParser < T > { public ParameterExpression Parameter { get ;} = Expression.Parameter( typeof (T)); public Expression<Func<T, bool >> ParserConditions(IEnumerable<Condition> condi

... Carter
schedule 5 min read
dev_tools

Emmet quick start

label #front end #Code Tools The content of this article comes from Emmet official documents, and only about HTML syntax (because I am not a front-end, I rarely need to write CSS), I added some Chinese comments in it, so that I can refer to it when I forget it in the future. In fact, it is very easy to master Emmet , The grammar is not very complicated, basically you can learn it after reading it. Why not translate it into Chinese? Because some nouns and sentences do not know how to translate,

... Jayden
schedule 13 min read
dev_tools

Final Draft of Financial Intelligence Assignment

[toc] Data set source 2021 China University Student Insurance Digital Challenge-Digital Track (starts on April 26, 2021) Question link: www.heywhale.com/org/pingan/... 2021 China University Student Insurance Digital Challenge" is hosted by the Organizing Committee of the China Banking and Insurance Regulatory Commission, the only daily newspaper in charge of the China Banking and Insurance Regulatory Commission, the China Insurance Society, and Ping An Property Insurance of China. Shenzhen Big D

... Kaden
schedule 15 min read
dev_tools

Oracle basics

1. Database introduction database Generalized database Is a collection of physical operating systems and disks Narrow database Database + database operating system Oracle: The data structure located in the physical memory is made of a shared memory pool lock with multiple background processes of the operating system. The shared memory can be used by all processes. Storage structure: Physical storage Logical structure Database -> tablespace -> segment -> area -> the Oracle data block

... Luke
schedule 21 min read
programming

New features of ECMAScript

1. Introduction to ECMASCript 1,JavascriptLanguage itself refers toECMASCript, Just run on a different platformJavascriptExpanded. 2,JavascriptinWebThe following uses include:ECMASCript + Web APIs (BOM,DOM). 3.JavascriptinNode.jsThe following uses include:ECMASCript + Node APIs (fs,net,etc.). 4. Since 2016, ES has maintained one version iteration per year, what we said in the industryES6Can refer toECMASCriptAll standards. 5.ES6Great improvements have been made to the original foundation, which

... Emmett
schedule 15 min read
programming

Buffer and file stream read and write

1. Base conversion 1. Convert Binary to Decimal 1001 => 1 * 2 ^ 3 + 0 * 2 ^ 2 + 0 * 2 ^ 1 + 1 * 2 ^ 0 = 9 parseInt ( '1001' , 2 ); => . 9 copy the code 2. Convert decimal to binary Divide by 2 and take the remainder 3. Convert any base to any base # 0b Binary 0o Octal 0x Hexadecimal ( 0x64 ).toString( 2 ) => '1100100' ; copy the code 4. Why 0.1+0.2 is not equal to 0.3 0.5 in decimal, what is the binary 10 => 0.5 difference 20 times 2 => 0.1 duplicated code How to convert decimals

... Alyssa
schedule 24 min read
programming

rollup+vue3 develop personal component library

First of all, we need to know what rollup does What does rollup do? rollup is a JavaScript packaging module tool that can compile small codes into large blocks of complex codes, such as libraries or applications. Rollup uses new standardized formats for code modules. These standards are included in the ES6 version of JavaScript instead of the previous special solutions such as CommonJS and AMD. ES6 modules allow you to freely and seamlessly use the most useful independent functions in your favor

... Gabrielle
schedule 13 min read
programming

[Study notes] CSS preprocessor

background Since the birth of CSS, the basic grammar and core mechanism have not changed essentially, and its development is almost entirely an improvement in expressiveness. In the beginning, the role of CSS in web pages was only auxiliary decoration, and ease of learning was the biggest requirement; however, the complexity of websites is no longer the same, and native CSS is gradually making developers unable to do so. When the ability of a language is insufficient and the user's operating env

... Jack
schedule 19 min read
programming

Speaking from scratch: 1.Java basics and syntactic sugar

Java basics 1. Grammar 1. Features 1. Object Oriented 2. Cross-platform (JVM required) 3. Robustness (implemented on the basis of C and C++) 4. Higher security (GC garbage automatic recovery device, forced type checking to store specified types of data, and canceled pointers) 2. Operating mechanism Compile carried out 3. Java program development steps 1. Why can I run java directly without configuring environment variables after installing jdk, but not javac? When installing jdk, jdk will bring

... Carter
schedule 38 min read
1 2 3 4 5 6 7 8 9 10