1Foreword File uploading is very common in project development. Most projects will involve the uploading of pictures, audios, videos, and files. Usually a simple Form can upload small files, but when encountering large files, such as more than 1GB, or When the user’s network is relatively slow, simple file upload is not applicable. The user […]
Tag: handle
mybatis handles one-to-many, many-to-one, many-to-many relationships, annotations and xml file writing
Zero, Preface This article is used to study one-to-many, many-to-one, and many-to-many relationships between tables and objects. Two methods of xml file configuration and annotation configuration were studied Super complete~ The entities used for research are students, teachers, courses Note: The relationship between students and teachers should be many-to-many. This article uses many-to-one, that is, […]
Valgrind reports error disInstr(arm): unhandled instruction: 0xEC510F1E
Directory title Problem background specific reason The principle behind Conclusion Problem background When using cross-compiled Valgrind on the arm platform to monitor your own process, you will find that processes that rely on libcrypto will report an error. Roughly as follows ==20393== Memcheck, a memory error detector ==20393== Copyright (C) 2002-2022, and GNU GPL’d, by […]
C# OpenCvSharp DNN HybridNets simultaneously handles vehicle detection, drivable area segmentation, and lane line segmentation
Table of Contents Effect Model information project code download Effect Simultaneously handles vehicle detection, drivable area segmentation, and lane line segmentation Model information Inputs ———————– name: input tensor: Float[1, 3, 256, 384] ————————————————– ————- Outputs ———————– name:regression tensor: Float[1, 18414, 4] name:classification tensor: Float[1, 18414, 1] name：segmentation tensor: Float[1, 3, 256, 384] ————————————————– ————- project […]
[PyQt] (self-made class) handles mouse click logic
I wrote a class that I think is pretty good to simplify the mouse information in mousePressEvent, mouseMoveEvent and mouseReleaseEvent. The functions include the following: Current mouse status, including left/middle/right mouse button and click/double-click/lift Mouse anti-shake (only when the mouse has moved beyond a certain level), the sensitivity can be set; Mouse long press (triggered […]
How to design a reconciliation system that can handle tens of millions of data volumes, be distributed and highly available?
The path to growth as a programmer Internet/Programmer/Technology/Data Sharing focus on This article should take approximately 11 minutes to read. From: juejin.cn/post/7259949655583506490 1Background At present, online business volume is increasing day by day, with daily orders exceeding tens of millions, capital flows are large, and capital security has become a key concern. In order to […]
C# OpenCvSharp DNN HybridNets simultaneously handles vehicle detection, drivable area segmentation, and lane line segmentation
Effect Project Code using OpenCvSharp; using OpenCvSharp.Dnn; using System; using System.Collections.Generic; using System.Drawing; using System.IO; using System.Linq; using System.Numerics; using System.Text; using System.Windows.Forms; namespace OpenCvSharp_DNN_Demo { public partial class frmMain : Form { public frmMain() { InitializeComponent(); } string fileFilter = “*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png”; string image_path = “”; DateTime dt1 = DateTime.Now; DateTime dt2 = DateTime.Now; float […]
How to handle rocketMq message accumulation
Message accumulation is common in the following situations: (1) The newly launched consumer function has a bug and messages cannot be consumed. (2) The consumer instance is down or temporarily unable to establish a connection with the Broker due to network problems. (3) Producers push a large number of messages to Broker in a short […]
[ElasticSearch Series-08] ElasticSearch handles the relationship between objects
ElasticSearch series overall column Content Link address [1] ElasticSearch download and installation https://zhenghuisheng.blog.csdn.net/article/details /129260827 [2] ElasticSearch concepts and basic operations https://blog.csdn.net/zhenghuishengq/article/details/134121631 [3] ElasticSearch’s advanced query Query DSL https://blog.csdn.net/zhenghuishengq/article/details/134159587 [4] Aggregation query operation of ElasticSearch https://blog.csdn.net/zhenghuishengq/article /details/134159587 [5] SpringBoot integrates elasticSearch https://blog.csdn.net/zhenghuishengq/article/details/134212200 [6] The construction of Es cluster architecture and the core concepts of clusters https://blog.csdn.net/zhenghuishengq/article/details/134258577 […]
How does Node.js handle multiple requests?
How does Node.js handle multiple requests? Foreword In the field of computer science, the concepts of concurrency and parallelism are often mentioned. However, these two terms are often conflated, leading to a lot of confusion among many people about their understanding. The editor of this article will help readers better understand their different characteristics and […]