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1. Interprocess communication simply means that two or more processes can exchange data with each other 2. The general process is independent. The PCB(struct task_struct structure) of a process is also called the process control block, which only stores the information of the process. The physical memory mapped by the virtual address space thr ...

1. Longest substring without repeated characters (stress deduction 3) Given a string s, please find the length of the longest substring that does not contain duplicate characters. Example 1: input: s = "abcabcbb" output: 3 explain: Because the longest substring without duplicate characters is "abc"，So its length is 3. You can use "s ...

During the development process, you often encounter the time when you need to copy the object, because the object is a reference data type and the object's address is recorded in the assignment process, so if multiple variables point to the same memory address and change the properties of one variable, all variables will be affected, and deep c ...

Broken thoughts As the first group of people who came into contact with the Internet in China, there are countless pictures of ancient times on my hard disk, and many of them are downloaded from forums that are not very popular. As we all know, this uses phpwind v7 5. For the widely used Chinese Forum, its user id actually corresponds to a str ...

1. Dynamic planning The dynamic programming algorithm is similar to the divide and conquer method. Its basic idea is to decompose the problem to be solved into several sub problems. First solve the sub problems, and then get the solution of the original problem from the solutions of these sub problems. Different from the divide and conquer met ...

If the thread is not the main thread, it is recommended to open the database. If the thread is not the main thread, it is also recommended to open the database. If the thread is not the main thread, it is also recommended to open the database. The new QTcpServer class may not enter the incomingConnection function under the 64 bit version of Q ...

1,Docker0 Empty all images and containers in the host; Then view the network IP # Delete all containers docker rm -f $(docker ps -aq) # Delete all mirrors docker rmi -f $(docker images -aq) # View IP ip addr test Create and start a Tomcat container docker run -d --name tomcat01 tomcat View IP changes in host Try to en ...

Strategy pattern of Java design pattern Prepare project questions (1) There are all kinds of ducks (such as wild duck, Peking duck, water duck, etc. ducks have all kinds of behaviors, such as barking, flying, etc.) (2) Display duck informationBasic introduction to strategy mode (1) In Strategy Pattern, algorithm families (policy groups) are de ...

Chapter II IMU sensor Course Code: https://github.com/kahowang/Visual_Internal_Odometry/tree/main/%E7%AC%AC%E4%BA%8C%E7%AB%A0%20IMU%E4%BC%A0%E6%84%9F%E5%99%A8/homework_chapter2 Reference blog: Homework 2 of handwriting VIO from scratch of dark blue College Using imu_utils tool generates the Allan variance calibration curve of IMU Error an ...

jQuery is a JavaScript library across mainstream browsers, which encapsulates JavaScript related method calls and simplifies JavaScript operation on HTML DOM dom object and jquery object dom object Objects created using javascript syntax are called dom objects, or js objects. var obj=document.getElementById("txt1"); Obj is a dom objec ...