Reference the Lua interpreter in Visual Studio, compile the Lua source code, and execute the Lua script

Preface What is this article talking about Introduce lua interpreter in Visual Studio Use C++ to call Lua files What is this article suitable for Suitable for beginners beginner Lua Suitable for people who need to combine development of C/C++ and lua What is needed for this article Have a simple understanding of Lua syntax […]

[Linux inter-process communication] 05. Zombie process

【Linux Interprocess Communication】 Project code acquisition: (Please order a free Star, your Star is my motivation for writing!) 05. Zombie process Zombie process: means that after the process terminates, resources are not recovered, and the status is Z + How to create a zombie process, it is very simple, Create a child process through the […]

TypeScript7 – intersection and index

Next, I will talk about the advanced types of TS. The so-called advanced types refer to some language features introduced by TS for the flexibility of the language. These features will help us deal with complex and changeable development scenarios. This article will talk about the intersection type and index type of TS. 1. Intersection […]

Python calculates the distance between two points by latitude and longitude

Python calculates the distance between two points by latitude and longitude There are generally two methods for calculating the distance between two points by latitude and longitude, geodesic distance (assuming the earth is an ellipsoid) and great circle distance (assuming the earth is a sphere). The latter is slightly lower in accuracy than the former, […]

springboot integrates Redis to save commodity and commodity inventory information

1. Add dependencies and configuration <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> Add the following configuration in application.yaml: spring: redis: # address host: localhost # port, default is 6379 port: 6379 # password password: # Connection timeout timeout: 10s lettuce: pool: # The minimum idle connection in the connection pool min-idle: 0 # The maximum idle connection in […]

[Nginx] cache integration

Article directory The concept of caching Nginx web cache service Related instructions for Nginx cache settings Nginx cache setting case Clearing of Nginx cache Method 1: Delete the corresponding cache directory Method 2: Use a third-party extension module Nginx sets resources not to cache The concept of caching Cache is the buffer for data exchange […]

The principle of polymorphism, the virtual function table of single inheritance and multiple inheritance, and the printing of virtual function table.

1. The principle of polymorphism 1. What is the following result? class A { public: virtual void func() { cout << “func()” << endl; } private: int_a = 1; }; int main() { printf(“%d\\ “, sizeof(A)); return 0; } Is it 4? 8? or how much? The printed results are as follows: Why 8? , […]

Linux interprocess communication – shared memory

Author: Lingmo Blog homepage: Lingmo’s blog Column: Linux system programming, file knowledge and understanding, Linux process learning… If you think the blogger wrote well, I hope everyone will keep repeating (?Follow,?Like,?Comment), please support me a lot! ! Table of Contents Shared memory principle shared memory function Shared memory related instructions Shared memory code display Shared […]

There are so many people on the Internet who advocate learning Python to enter the IT industry. What if they can’t find a job after learning Python?

Mastering a skill costs money. Before making a decision, it is necessary to make a prospect judgment and measure the input-output ratio. However, once you think about it deeply, you may yourself have doubts about the value of learning Python. Because most people look at this issue to judge whether they can improve their competitiveness […]

Efficient solution: It only takes 13 seconds to insert 300,000 pieces of data into MySQL

Click to follow the official account, Java dry goodsdelivered in time This article mainly describes the cases and results of large data volume data insertion through MyBatis, JDBC, etc. 300,000 pieces of data are inserted into the database for verification Entity class, mapper and configuration file definition User entity mapper interface mapper.xml file sqlMapConfig.xml […]