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#The implementation mechanism of Linux 0.11 file system ##1, Overview Linux 0.11 file system is similar to Minix 1.0 file system, which is an index file system. For Linux, everything is a file. Generally, there are common files, character device files, block device files, symbolic links, directory files ...

1. Node related operations 1.1 method of deletion Delete method of node: node.removeChild(nodes), Review the method of adding nodes: node.appendChild(nodes), 1.2 operation of replication (clone) Node assignment method: node.cloneNode(); What should be noted: Here, there are two values in the brackets of cloneNode(), one is false and the other ...

Kustomize is a tool to solve the application management problem of k8s yaml. kubectl has integrated kustomize since version 1.14. Before that, we had to install it ourselves. You can download the package of the corresponding operating system on GitHub for installation (https://github.com/kubernetes-sigs ...

Data is the premise of data analysis. This paper mainly describes how to use Python to collect the basic stock data of Shanghai, Shenzhen and China: stock list and stock price. 1. Stock List As we all know, for A shares, there are two exchanges in China, namely the Shanghai Stock Exchange and the Shenzhen Stock Exchange.We mainly get a list ...

Threading: In a process, to do many things at the same time, you need to run multiple subtasks at the same time. We call these subtasks in the process multithreading For example, to play LOL, it is only a process, but it can be controlled by mouse and keyboard. So many subtasks are operated by threads ...

Article directory Seaborn 1. Seaborn 2. Overall layout style setting 3. Style details 4. palette 4.1 palette 4.2 classification color board 4.3 circular drawing board 4.4 palette color settings 4.4.1 use xkcd color to name color 4.4.2 continuous color board 4.4.3 cubehelix? Palette() 4.4.4 call th ...

This blog mainly analyzes how ViewRoot, the manager of ViewTree, works. 1, Two way communication between ViewRootImpl and WMS ViewRootImpl > WMS: IwindowSession WMS > ViewRootImpl: Iwindow Iwindonsession and Iwindow are anonymous bindservers. 1. The process of viewrootimpl getting the hand ...

The summary of C++ template This article is a project summary file developed around class templates. We share some details about the use of class templates and easy to ignore when using classes. For example, the member variable of a class is the processing method in the constructor and destructor whe ...

Although I met such a problem once when I started to learn JAVA, I didn't pay attention to recording the problem at that time, and after talking with the teacher, I couldn't get over it. This time I encountered such a problem, which is still very scary. After all, if we can't even trust the debug tool, ...

I/O input / output, read and write, cache and raid can improve storage IO performance. IOPS (Input/Output Operations Per Second), that is, the number of I/O operations per second, is mostly used in database, storage and other occasions to measure the performance of random access. The IOPS performan ...