A friend suddenly asked two days ago: What is the simplest solution to prevent repeated submissions in Java? This sentence contains two key messages, first: Prevent duplicate submissions; second: Easiest. So the author asked him, is it a stand-alone environment or a distributed environment? The feedback I got was that it would be simple if […]
Tag: option
Java Graduation Project JavaWeb Animal Adoption Website Based on Jsp+Servlet
Project type: JAVA WEB project Project name: JavaWeb animal adoption website based on Jsp + Servlet User type: dual roles (administrator + caring person) Design pattern: Jsp + Servlet Development Tools: Eclipse Database: Mysql + Navicat Database table: 6 sheets Applicable: When studying and experimenting with JAVA courses such as software engineering, computer science and […]
How to add permissions to vxetable right-click menu options and render based on row data
How to add permissions to vxetable right-click menu options and render based on row data Business scenario: ? The page has button permissions, and the right-click menu function is also implemented on the form. It is also necessary to control the permission function of the right-click menu. Solution ideas: By viewing the document, right-click the […]
Stop abusing the optional chaining operator (?.)!
Click on the front-end Q above and follow the public account Reply to join the group and join the front-end Q technology exchange group Foreword I have sorted out some of the more typical code specification issues in recent products. There is a specification about optional chain operator (?.). I just mentioned it at the […]
Linux: linux getopt_long() function (command line parsing) (getopt, getopt_long_only) (short option -, long option –)
Foreword In Linux, various commands are often needed, usually with various parameters. How are these parameters parsed? Usually the functions getopt, getopt_long, and getopt_long_only functions provided by GNU C are used to parse command line parameters. 1. About command line parameters Command line parameters can be divided into two categories, one is short options, and […]
Write static library (ar, package), write dynamic library (sharing principle, -fPIC, -shared), install static library (system path (library name)/specified path (-I, -L option)), install dynamic library ( ldd,-static, tells the loader the path to search
Table of Contents How to write a library static library Introduction — static library principle form static library introduce ar Options Create static library Add files to existing static library After we have a library, how should we give it to others? dynamic library The difference between static library and dynamic library linking static library […]
ConfigureAwaitOptions in .NET 8
ConfigureAwaitOptions in .NET 8 Intro In .NET, we can set ConfigureAwait(false) for Task operations to avoid returning to the original synchronization context after the asynchronous operation is completed. .NET 8 introduced a ConfigureAwaitOptions The usage of ConfigureAwait has been further expanded. Let’s take a look at how to use it. Definition ConfigureAwaitOptions is a flag […]
Design and implementation of stray animal adoption system website based on SSM
Get the source code at the end Development language: Java Java development tools: JDK1.8 Backend framework: SSM Front-end: developed using JSP technology Database: MySQL5.7 combined with Navicat management tool Server: Tomcat8.5 Development software: IDEA/Eclipse Is it a Maven project: Yes Table of Contents 1. Project Introduction 2. System functions 3. System project screenshots Administrator function […]
Test Winsock options
Description A server that echoes a line of string is implemented: the client sends a line of string, ending with ‘\\ ‘, and after the server receives the line, it sends it back to the client intact. There is a limit to the number of Sockets that Select can monitor under Windows. If it exceeds, […]
66_Pandas How to check and change option settings
66_How to check and change option settings in Pandas Using pandas, you can customize behavior and display by changing option settings. Explains how to check and change various setting values. The following content is explained here. Access properties to inspect and change settings: options Display configuration information in list form: describe_option() Use functions to check […]