Programmer Think

Preface about FlutterGo Maybe not too much introduction. If you have a buddy you first heard of, you can move around. FlutterGo official website Check out a brief introduction. FlutterGo has many updates in this iteration. In this update, the author is responsible for developing the back end and the corresponding client part. Here is a brief i ...

In python, a list is represented in square brackets, [] Within square brackets, it can be int, str-type data, or even Boolean values such as True/False. a=[] #A variable a is defined, which is list type and empty. print(type(a)) print(bool(a)) ...

What is an event? Events are a series of TouchEvent s caused by the user touching the screen of the mobile phone, including ACTION_DOWN, ACTION_MOVE, ACTION_UP, ACTION_CANCEL, etc. These actions are combined into click events, long press events and so on. In this article, we use Log testing to understand the distribution, interception and proce ...

Preface Previous Message Middleware - RabbitMQ (7) Advanced features are all here! (top) We describe how messages can be delivered 100% successfully., idempotency concept in detail, how to avoid the problem of repeated consumption of messages during the peak business period of mass order generation?Confirm confirmation message, Return return ...

Preface Language: Java Environment: IntelliJ IDEA JDK version: 1.8 Source code: GitHub Definition of stack A stack, also known as a stack, is a linear table with limited operations.Limits a linear table to insert and delete only at the end of the table.This end is called the top of the stack, while the other end is called the bottom.Inserti ...

A* algorithm (3) algorithm implementation 1. Array2D class 2. Point class 3. AStar class 3.1 Node Class 3.2 Initialization Processing 3.3 Judgment Function 3.4 Search for points around nodes 3.5 Wayfinding 4. Map display 5. Computing tests 5.1 ...

Recently, I spent almost two weeks of idle time creating a date selection component. Let's see what happens first It can be said that it is a component that is often used and few people will actively implement it. After all, it still takes a certain amount of time to achieve it. So after normal work, you can try to create some basic component ...

SpringBoot e-commerce project mall (20k+star) address: https://github.com/macrozheng/mall abstract This paper mainly explains the process of file upload by mall integrated OSS, which is a direct front-end method after service-side signature. OSS Ali Cloud Object Storage Service (OSS) is a mass, safe, low cost, high reliable cloud storage servi ...

Catalog 1. What is Arthas 2. What can Arthas solve? 3. Fast Installation Step 1: Download Step 2: Operation Step 3: Select the process 4. Practical use 5. Summary This blog is reprinted from Ali Open Source Java Diagnostic Tool 1. What is Arthas Arthas is ...

Preface Language: Java Environment: IntelliJ IDEA JDK Version: 1.8 Source code: GitHub Definition of queue Queue is a special linear table. It only allows deletion at the front of the table, but insertion at the back of the table. Like stack, queue is a restricted linear table. The end of the insertion operation is called the end of the que ...