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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 ...

The function of the os module: the os module provides a very rich way to handle files and directories (manage and maintain directories and files). The function of the os.path module: it is mainly used to obtain the attributes of the file (the (physical address) of the management path). Xiao Sheng summarized some common attributes and functions. ...

(1) What is Markdown Markdown is a lightweight markup language, which allows people to write documents in a plain text format that is easy to read and write. With the help of markdown, people can quickly typeset and transform them into rich HTML pages. At present, it is used by more and more writers a ...

Learn kafka, this article takes you to the beginning. Article directory 1. Build windows integrated environment 1.1 java8 installation 1.2 zookeeper installation 1.2.1 download zookeeper 1.2.2 install and modify the zoo.cfg configuration file 1.2.3 setting the zookeeper environment variable 1.2.4 ve ...

ID Number Verification System Based on Visual Structure Abstract: This work is a universal ID number verification system. It has been tried to run on Linux and Windows systems, and the results are satisfactory.The system creates a highly compatible visual interface by using the base GUI library tkinte ...