Personal blog system development is briefly divided into five modules Homepage Login function Comment management Article management Email management A complete blog system, the front-end page can display and publish comments, comment users can reply to each other, and the back-end can manage the comment content. Due to limited space, the article comments of this […]
Tag: com
PWN · heap | unlink | free_hook[SUCTF 2018 New Recruitment Competition]unlink
After learning unlink in the early stage, I found a question called unlink in NSSCTF today and tried to do it without looking at wp. The process went smoothly! Foreword The questions are very bare in terms of unlinking knowledge points, very direct, and the ideas are very clear. 1. Title 2. Brief analysis of […]
Explosive performance! Python multi-process mode implements multi-core CPU parallel computing
Article directory Preface 1. Multi-process mode in Python 2. Methods to improve program execution efficiency 1. Multiple processes execute tasks concurrently 2. Process pool 3.Message queue 4. Shared memory 5.Asynchronous IO Summarize About Python technical reserves 1. Learning routes in all directions of Python 2. Python basic learning video 3. Excellent Python learning books 4. […]
Data structure-heap sort and its complexity calculation
Table of Contents 1. Heap sort 1.1 Adjust heap construction upward 1.2 Adjust heap construction downwards 2. Comparison of time complexity between two heap building methods 2.1 Adjust downward the time complexity of heap building 2.2 Adjust the time complexity of heap construction upward Topk problem In the previous section, we talked about Heap implementation, […]
Git command line usage guide
Git command line usage guide Part One: Configuring Git 1.1 Set user information 1.2 Configure line break processing Part 2: Create and configure the warehouse 2.1 Initialize the warehouse 2.2 Clone the repository 2.3 Recursive cloning 2.4 Deep cloning Part 3: Basic Operations 3.1 Add files 3.2 Commit changes 3.3 View status and submission history […]
Computer Vision: Using opencv to realize bank card number recognition
1 Overview 1.1 Opencv introduction OpenCV is the abbreviation of Open Source Computer Vision Library. It was proposed and established by Intel in 1999 and is now supported by Willow Garage. It is a highly open source computer vision library that can implement Windows, Linux, Cross-platform operation on Mac and other platforms. opencv is an […]
It turns out that this is the thread closing method recommended by JDK
This is a community that may be useful to you One-to-one communication/interview brochure/resume optimization/job search questions, welcome to join the “Yudao Rapid Development Platform” Knowledge Planet. The following is some information provided by Planet: “Project Practice (Video)”: Learn from books, “practice” from past events “Internet High Frequency Interview Questions”: Studying with your resume, spring blossoms […]
Springboot2.x integrated lettuce connection redis cluster reports timeout exception Command timed out after 6 second(s)
Original/Zhu Jiqian Background: Recently, I was doing a stress test on a newly developed Springboot system. I found that when I first started the stress test, I could access data from the redis cluster normally. However, after a few minutes of pause, and then when I continued to use jmeter to perform the stress test, […]
ESP32 IDF development application? Wifi UDP communication
ESP32 IDF development application? Wifi UDP communication 1. The blogger’s purpose for writing this technical article: 2. Overview 3. Introduction to Socket API library 4. Software design 5. Examples Don’t get lost-Navigation bar Quickly navigate to find what you want (article directory) If this article is useful to you, please like and save it. Your […]
Android Compose implements number selector
Android Compose implements number selector Preface Blogs to learn from The text is here Use process Conclusion Foreword I haven’t written a blog for a long time. Now let’s write an article about how to implement a numerical scrolling selector in compose. This is because a component in my company’s project uses a similar function. […]