opera – SyntaxBug

lv4 embedded development-8 file attributes and directory operations

Table of Contents 1 Access directory – opendir 2 Access directory – readdir 3 Access directory – closedir 4 Modify file access permissions – chmod/fchmod 5 Get file attributes – stat/lstat/fstat 6 File attributes – struct stat 7 File Types – st_mode 8 File access permissions – st_mode 9 Exercise – Get and display file […]

JavaScript DOM operations (2)

1. Element attributes 1. Attributes and characteristics of elements We have already learned how to obtain nodes and the attributes that nodes usually contain. Next, let’s study the element Element in detail. We know that in addition to start tag, end tag, and content, an element also has many attributes (attribute) When the browser parses […]

[Node.js guide to operating SQLite]

Node.js guide to operating SQLite In this blog, we will learn how to operate SQLite database in Node.js. We will use the sqlite3 module to create databases, create tables, and perform data addition, deletion, modification, and query operations. Article directory Node.js guide to operating SQLite Install sqlite3 module Create database Create table Add, delete, modify […]

Use of “Galaxy Kirin Advanced Server Operating System V10”

In a nutshell: I talked about the basic use of Kirin Server V10, including terminal and VNC Article directory Preface Basic architecture environment Hardware environment Software Environment Kirin installation steps 1. Install the VM on the host and activate it 2. Create a virtual machine using VM 3. Start the virtual machine Terminal common points […]

[Java IO stream – Special offer for Mid-Autumn Festival] Classification of streams, API usage, file operations

Blogger: _LJaXi Column: Java | From cross-platform to cross-industry Development tools: IntelliJ IDEA Community Edition 2022.3.3 Java IO stream Mid-Autumn Festival special offer Java Io what is flow Classification of flows file byte input stream 1. Conditional loop solution 1 (2) Read characteristics 2. Array storage solution file byte output stream Output stream construction method […]

QLExpress code interpretation, operation principle analysis

Introduction: This article briefly introduces the detailed function diagram above: the code entry, the main logic and algorithm of the code. Calling code example //This article uses the helloworld case to enable two parameters for printing logs. It is usually not recommended to enable it in actual use. boolean printParseLog = true;//Syntax analysis log switch […]

Summary of C++ map access elements empty, size, max_size, operator[], at, insert, erase, swap, clear, emplace, emplace_hint (206)

Introduction: CSDN blog expert, focusing on Android/Linux System, share multi-mic voice solutions, audio and video, codec and other technologies, and grow with everyone! Quality Column:Audio Engineer Advanced Series[Original information is being updated continuously… ] Life motto: There are never shortcuts in life, only actions It is the only cure for fear and laziness. For more […]

Yellow Gloves 22Chapter 7: Preprocessing and file operations

Preprocessing is the work done before compilation. The compiler automatically calls the preprocessor to process the preprocessing part starting with #’ in the source code; after the processing is completed, it enters the compilation stage of the source code. Macro definition, file inclusion, and conditional compilation all belong to the preprocessing part. ——————- Table of […]

take off! 8 Python tips to speed up cool operations

Reprinted from: Internet This time I will share how to speed up pure Python programming. Python is a scripting language that has some shortcomings in efficiency and performance compared to compiled languages such as C/C++. However, there are many times when Python’s efficiency is not as exaggerated as imagined. This article summarizes some tips for […]

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