Typescript generics, keyof, typeof, index type, mapping

Typescript generics A major part of software engineering is building components that not only have well-defined and consistent APIs, but are also reusable. Components that can handle today’s and tomorrow’s data will give you the most flexible ability to build large software systems. Use generic type variables function identity<Type>(arg: Type): Type { return arg; } […]

BRepOffsetAPI_MakeOffset function case

Performed edge creation, wire creation, and curve offset functions through wires, as well as display functions. void ViewWindow::OnGen2dCurve() { // Clear All _ctrlUi->listView->Clear(); try { //Construct a line segment GC_MakeSegment Segment1(gp_Pnt(20, 0, 0), gp_Pnt(30, 0, 0)); //Construct an edge based on the line segment BRepBuilderAPI_MakeEdge anEdge(Segment1.Value()); BRepBuilderAPI_MakeEdge anEdge2(gp_Pnt(30, 0, 0), gp_Pnt(30, 20, 0)); \t\t BRepBuilderAPI_MakeEdge […]

openEuler 22.03 LTS compiles, installs libreoffice and creates rpm package – the road to dream building

Environmental description Operating system: Huawei Euler operating system openEuler 22.03 lts x86_64 Libreoffice version: the latest version 7.6 Compilation and installation process 1. Install compilation tools and dependency packages sudo yum install -y snappy snappy-devel autoconf automake libtool git gcc gcc-c + + gcc-objc + + make cmake openssl openssl-devel zlib zlib-devel bzip2 bzip2-devel bzip2-libs […]

Solve OSError: Unable to open file (truncated file: eof = 8388608, sblock->base_addr = 0, stored_eof = 0

Table of Contents Solve OSError: Unable to open file (truncated file: eof = 8388608, sblock->base_addr = 0, stored_eof = 0) error wrong reason solution Precaution Application scenarios Causes and precautions for file truncation or damage reason: Precautions: Solve OSError: Unable to open file (truncated file: eof = 8388608, sblock->base_addr = 0, stored_eof = 0) error […]

Python batch downloads Sentinel-1 precision orbit files (.EOF)

Based on Xiaolong’s hard work on RS, we added the reading time of SLC images (readSLCFileName, which saves the operation of counting the timing of downloading sentinel images), detecting the downloaded track file size and re-downloading the wrong file (getFileSize and downloadWrongOribits) content For specific operation methods, see: https://blog.csdn.net/qq_44932630/article/details/124202144、 FBI WARNING: In this example, you […]

C language analyzes the operational relationship between sizeof, strlen, arrays, and pointers

When using sizeof and strlen to find the size and length of an array when the pointer points to different positions, analyze the position pointed by the pointer at this time and the meaning of the formula in order to deepen the understanding of arrays and pointers. Table of Contents Foreword: 1. One-dimensional array and […]

instanceof in Java

The instanceof operator in Java is a very useful tool that helps us dynamically determine the type of an object at runtime. By using instanceof, we can easily check whether an object is an instance of a specified type (or its subclass). This article will introduce in detail the usage, characteristics and some practical application […]

Java implements word excel ppt template rendering, export and preview LibreOffice jodconverter

Java Office 1. Document format conversion Document format conversion is an operation that is often required in office operations, such as converting docx documents into pdf format. Java has many operating methods in this regard, which can be roughly divided into internal calls (no need to install additional software) and external calls (need to install […]

The difference between sizeof and strlen

1 The difference between sizeof and strlen 1. sizeof is an operator that does not need to reference the header file. The form is generally sizeof (variable or expression), and it calculates the occupied space. The units are bytes, so it can calculate the size of any type; 2. strlen is a string function and […]

The difference between sizeof and strlen

1. The difference between sizeof and strlen sizeof is a keyword, and the parameters can be various data (including functions, types, objects, arrays, pointers…) used to calculate the byte size of the data. strlen is a function. The parameter type must be a character pointer (char *). It is used to calculate strings. It starts […]