Blogger CSDN homepage:Hangdian Code Farmer-NEO ? ?Column classification:Linux from entry to proficiency? ? Code Warehouse: NEO’s Learning Diary ? Follow meTeach you more operating system knowledge ? Process program replacement 1 Introduction 2. Understanding of exec series functions 3. execl series functions 4. execv series functions 5. Usage scenarios of program replacement 6. Implement a […]
Tag: pre
How to Properly Estimate Java Thread Pool Size: A Comprehensive Guide
Thread creation in Java incurs significant costs. Creating threads consumes time, increases request processing latency, and involves a lot of work for both the JVM and the operating system. To alleviate these overheads, thread pools come into play. In this article, we’ll delve into the art of determining the ideal thread pool size. A fine-tuned […]
Build a website using wordpress based on IIS under Windows Server
Article directory Preface 1. Components required to build a website in WordPress 2. Component installation and configuration 1. Enable IIS 2. Install and configure php 3. Install and configure MySQL 4. Install and configure wordpress 3. Analysis of error prompts and causes encountered Foreword When I was learning wordpress before, because I was not familiar […]
Talk about how the front-end prevents data leakage
shigen is a blogger who writes daily articles. He is good at the development of Java, python, vue, shell and other programming languages as well as various applications and scripts. Record growth, share knowledge, and retain feelings. Recently, I suddenly discovered an interesting thing. Some websites are almost dead when you enter them. That kind […]
Pre-middle and post-order traversal (recursive and non-recursive) and level-order traversal of binary trees
Pre-middle and post-order traversal (recursive and non-recursive) and level-order traversal of binary trees Article directory Pre-middle and post-order traversal (recursive and non-recursive) and level-order traversal of binary trees Preface 1. Recursive implementation 1. Preorder traversal 2. In-order traversal 3. Post-order traversal 2. Non-recursive implementation 1. Preorder traversal 2. In-order traversal 3. Postorder traversal 3. Layer […]
Application case of chain stack: expression evaluation
There is a complete code at the end of the article. Readers who have questions can discuss it together in the comment area, or they can communicate and learn together through private messages. 1: Question requirements Case Analysis Any expression is composed of operands, operators and delimiters, collectively called words. Generally, the operand can be […]
Basic usage of lambda expressions
Introduction Lambda expressions are an important feature introduced in Java 8 that allow us to write anonymous functions in a more concise way. Before discussing Lambda expressions, let us first review the problems with anonymous inner classes. Problems with anonymous inner classes Before Java 8, we usually used anonymous inner classes to pass behavior. For […]
Custom annotations prevent forms from submitting code repeatedly
/** * Custom annotations to prevent repeated submission of forms * * @author LZJ */ @Inherited @Target(ElementType.METHOD) @Retention(RetentionPolicy.RUNTIME) @Documented public @interface RepeatSubmit { /** * Interval time (ms), less than this time is considered a repeated submission */ int interval() default 3000; /** * Interval time unit (milliseconds) */ TimeUnit timeUnit() default TimeUnit.MILLISECONDS; /** * […]
k-Wave丨Photoacoustic imaging simulation丨Definition of Gaussian sensor frequency response + comparison of simulation functions + setting of initial pressure gradient (5)
This article introduces– 1.How to define Gaussian sensor frequency response: How to express the frequency response of a detector (for example: piezoelectric ultrasonic transducer) when the response has a Gaussian shape, based on the example of a homogeneous propagation medium; 2.Comparison of simulated functions: Introducing a brief comparison between the simulated functions “kspaceFirstOrder2D” and “kspaceecondorder”. […]
shell – regular expression, sed streaming editor
Regular Expressions Overview Overview Use a “string of symbols” to describe data with common attributes Basic regular list Extended regular list Prepare materials [root@localhost ~]# head -5 /etc/passwd > user [root@localhost ~]# cat user root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin Test ^ $ [root@localhost ~]# grep root user root:x:0:0:root:/root:/bin/bash [root@localhost ~]# grep ^root user root:x:0:0:root:/root:/bin/bash [root@localhost […]