Articles
android

Why is Android not stuck? Choreographer

Long press the picture to save and share it to Moments Micro-channel public number: [ Gu Linhai ] questions or suggestions, please focus on public message number; [If you think you have help, please a look at ] Author: Drummor link: https: //juejin.im/post/6844903818044375053 Preface In response to the problem of the Android UI not being smooth, Google proposed Project Butter to reconstruct the Android display system. Three key points of this refactoring VSynch vertical synchronization Triple B

... Bryce
schedule 14 min read
android

Some abilities that Java posts need to have if they want to get 30K+

In addition to the ones mentioned in this article, I have also compiled the latest interview questions and interview questions of other major manufacturers Java posts. Knowing that you like the electronic version, they have all made PDFs and shared them with everyone for free. There is a link to receive at the end of the article. Friends who need it directly Click the link to receive it Ali side Talk about the difference between ArrayList and LinkedList First of all, their underlying data struc

... Molly
schedule 47 min read
android

Advanced application of C language complex expression and pointer

"C Language Advanced Topic Part 4-4.4. C Language Complex Expression and Pointer Advanced Application" The first part, chapter list 4.4.1. Pointer array and array pointer 4.4.2. Function pointer and typedef 4.4.3. Function pointer in practice 1 4.4.4. Function pointer in practice 2 4.4.5. Discuss typedef 4.4.6. II Heavy pointer 4.4.7. Two-dimensional array 4.4.8. Operation and pointer of two-dimensional array The second part, chapter introduction 4.4.1. Pointer array and array pointer This secti

... Dominic
schedule 23 min read
android

PPR data model

Created by Jerry Wang, last modified on Jul 19, 2014 Search for the corresponding instance according to the PPR id: Get all items through item relation: Get all the rules of the item through PRPItemVPRuleRel: Then get all the rule parameters: Use the following code to print all the rule information of the specified ppr: class ZCL_CRM_PPR_TOOL definition public final create public. public section. class-methods CLASS_CONSTRUCTOR. class-methods GET_PRP_BY_ID importing !IV_PRP_ID type CRMT_PRP_ID r

... Elijah
schedule 12 min read
android

Jetpack Compose

Snapshot Jetpack Compose Snapsot Compose state state state Introduction to the Compose Snapshot system Snapshot API Compose Snapshot( ) state Snapshot : Dog , state: class Dog { var name: MutableState<String> = mutableStateOf("") } val dog = Dog() dog.name.value = Spot val snapshot = Snapshot.takeSnapshot() dog.name.value = Fido println(dog.name.value) snapshot.enter { println(dog.name.value) } println(dog.name.value) // Output: Fido Spot Fido takeSnapshot() " " State enter enter enter fun

... Paige
schedule 6 min read
coder_life

The secret hidden in the watermark

Recently, when testing the ImageX processing of the Volcano Engine today, I discovered that it provides a capability called blind watermarking; See the introduction to the blind watermark: Use method test: Blind watermark will be automatically added when accessing a certain URL; after adding, the information in the picture will be extracted again; related articles: I. Introduction 1.1 What is a dark watermark Broadly speaking, dark watermarking can be understood as adding hidden marks to some ca

... Adeline
schedule 17 min read
coder_life

QML programming-learn Qt development

Author: Old Nine Technology Social: Zhihu Public number: Laojiu School (the newcomers have surprises) Special statement: originality is not easy, no reprinting or plagiarism is allowed without authorization, if you need to reprint, please contact the author for authorization Preface The code of this handout is executed using Qt 6 version, please rest assured to use it. What is QML Let me refer to the translation: QML is an acronym for Qt Meta-object Language. It is a declarative programming lan

... Jackson
schedule 9 min read
coder_life

Byte and Tencent interview process and impression record (already offer)

Preface This period was a little longer because I was preparing for an interview. After two interviews, I have some deeper understandings. For large companies, in addition to their professional knowledge, they also attach great importance to algorithms. To briefly talk about the situation, Byte has already got the offer, all Tencent interviews have passed, and there should be an offer. There are 4 sides of the byte: 3 technical sides and 1 hr side; Tencent 5 technical sides and 1 hr side. 5 of t

... Elijah
schedule 21 min read
coder_life

Pi Ziheng Embedded: The Birth of Speech Processing Tool pzh-speech (3)-Audio Display Implementation (Matplotlib, NumPy1.15.0)

Hello, everyone, I am the ruffian, a serious ruffian who engages in technology. Today Pi Ziheng introduces to you the audio display realization of the birth of the speech processing tool pzh-py-speech . Audio display is the main function of pzh-py-speech. Pzh-py-speech uses Matplotlib and NumPy to realize the audio display function. Today, Pi Ziheng will introduce how audio display is implemented in pzh-py-speech. One, SciPy tool set SciPy is a set of Python scientific computing-related tools.

... Cora
schedule 10 min read
coder_life

Text picture parallax effect html+css+js

Not much, let s look at the effect first: This is the idea of a foreign blogger I saw on the Internet. It feels good. I immediately typed one by myself. It was really good~ achieve: 1. First define a paragraph of text, more points, at least can exceed the visual area of the browser: < section > < p > The only survivor couldn't tell us why the zimtrum sank. It seems that the speed of the ship's sinking is very fast. This theory can be supported by a lot of debris. However, the specifi

... Adriana
schedule 25 min read
dev_tools

One-click to complete the dialogue needs? You can't miss this plugin (Unity3D)

Recommended reading CSDN homepage GitHub open source address Unity3D plugin sharing Short book address My personal blog QQ group: 1040082875 I. Introduction Dialogue System is a branched unified conversation system. It does not require any scripting, but it is designed to be easily extended by programmers. The Unity dialogue system allows you to: Use branch logic to write interactive conversations. Display conversations in a flexible, fully customizable UI system. Define the task/task to be com

... Lucas
schedule 64 min read
dev_tools

Tell the interviewer that I can optimize groupBy, and I know it very well!

Guide When our dating platform is running online for a period of time, in order to recommend and top friends of interest to the platform users when searching for friends, at this time, we will perform data analysis on the user s behavior and give feedback based on the analysis results. He recommends his interested friends. Here, I use the simplest SQL analysis method: collect statistics on the gender and age of friends viewed by users in the past, and group them by age to get the statistical res

... Mark
schedule 14 min read
dev_tools

2021 latest Spring Security knowledge combing

1. Introduction to Spring Security Framework Spring is a very popular and successful Java application development framework, and Spring Security is a member of the Spring family. Based on the Spring framework, Spring Security provides a complete solution for web application security. As you may know about security, the two main areas are "authentication" and "authorization" (or access control). Generally speaking, the security of web applications includes user authentication (Authentication) and

... Ashton
schedule 23 min read
dev_tools

AI foundation: sequence model based on natural language processing

This article mainly refers to the notes part of Wu Enda's deep learning course [1]. 0. Introduction The sequence model is the basis of natural language processing. This episode explains the cyclic sequence model. I am writing an AI basic series, which has been released so far: \ AI Basics: Introduction to Simple Mathematics AI basics: Python development environment settings and tips AI Basics: Getting Started with Python AI Basics: Getting Started with Numpy AI Basics: Simple Introduction to Pa

... Nolan
schedule 91 min read
dev_tools

Use Python to analyze university information to help volunteers fill in

\ With the end of the college entrance examination, the majority of teachers, students and parents have also turned their attention to filling in their volunteers. Not long ago, the Ministry of Education also announced the "List of National Regular Colleges and Universities" (website:http://www.moe.gov.cn/jyb_xxgk/s5743/s5744/202007/t20200709_470937.html), this list contains the basic information of all colleges and universities in mainland China. It is very useful for candidates to fill in thei

... Benjamin
schedule 9 min read
programming

1024 Programmers' Day, is there any book that can please programmers the most?

Every October 24th is Programmer's Day. Programmers are a group that changes the world through the keyboard, and their brains are full of magical codes. The editor will knock on the blackboard and draw the key points. The day after tomorrow is the Programmer's Day! What surprises shall we have? If I have no surprises here, I would recommend a few good books. :) What is Programmer's Day? Why is October 24th every year as Programmer's Day? What is the stalk of 1024 Programmer's Day? 1024 is the te

... Richard
schedule 23 min read
programming

Java 10

Java 1.1 Java 1.2 Java Java // www.oracle.com/technetwork //11 horstmannn.com/corejava/ja 1.2.1 1.2.2 1.2.3 Java TCP/IP JavaApp URL 1.2.4 Java 1.2.5 1.2.6 Java 1.2.7 Java 1.2.8 Java Java 1.2.9 1.2.10 Java JavaSE8 1.2.11 Java Java 1.3 Java applet Internet applet 1.4 Java 1.5 Java Java HTML Java HTML XML Java XML XML Java Java Java Java Java Java Java C++ Java Java JavaScript Java Java Internet Android Java 2.1 Java 2.1.1 JDK JDK docs.oracle.com/javase/8/do Java JDK Java AppJRE Java AppServer JRE

... Dominic
schedule 26 min read
programming

An article to understand webpack

This article is written based on webpack 5 1. Getting started (familiarize yourself with the configuration of webpack) 1.1 Create an engineering project This will generate a package.json file under the current file @1 Engineering a project npm init -y duplicated code @2 According to official requirements, we download two packages npm i webpack webpack-cli -D duplicated code Installed in the production environment by default production -D installed in the development environment development Webp

... Jason
schedule 15 min read
programming

Promise use

Promise benefits Chain structure, easy to read Solve the hell callback problem Basic operation of promise // random function function rand ( m, n ) { return Math .ceil( Math .random()*(n-m + 1 ) + m- 1 ); } // Use new to create a Promise const p = new Promise ( ( resolve, reject ) => { // Promise receives a function type parameter value, this function also has two formal parameters, the first is called when the asynchronous task succeeds, the first The two are called when it fails (the resolv

... Kendall
schedule 12 min read
programming

JS: Implement a Promise

Preface Promise in JavaScript was born in ES2015 (ES6). It is a particularly popular asynchronous operation solution in front-end development at the moment, and it is almost a required test in the front-end interview process. If you can use Promises proficiently and have a deep understanding of the operating principles of Promises, you will surely be able to do so no matter in the actual development or in the interview process. In this article, we will analyze the features and usage of Promise s

... Abraham
schedule 12 min read
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