Foreword “In JavaScript, functions are first-class citizens.” We can always see this sentence in various books and articles. The popular explanation is: functions in JS are also objects. They can have attributes, can be assigned to a variable, can be placed in an array as elements, and can be used as attributes of other objects. […]
Tag: core
Basketball timing and scorer design based on 51 microcontroller
Based on 51 microcontroller basketball timing and scoring device design (Simulation + Program + Circuit Diagram + Schematic + Design Report) Function introduction Specific functions: 1. It can record the game time of the entire schedule, and can modify and pause the game time. 2. The scores of the two teams in the schedule can […]
Explosive performance! Python multi-process mode implements multi-core CPU parallel computing
Article directory Preface 1. Multi-process mode in Python 2. Methods to improve program execution efficiency 1. Multiple processes execute tasks concurrently 2. Process pool 3.Message queue 4. Shared memory 5.Asynchronous IO Summarize About Python technical reserves 1. Learning routes in all directions of Python 2. Python basic learning video 3. Excellent Python learning books 4. […]
A front-end performance optimization – performance score from 56 to 96
Big factory technology advanced front-end Node advanced Click above for Programmer Growth Guide and follow the official account Reply 1, join the advanced Node communication group Author:NewName https://juejin.cn/post/7273072756156235834 I recently read an article on front-end performance optimization. I had never done any performance optimization before, so I just studied it. If you want to optimize […]
Encapsulation and use of JWT in ASP .NET Core
JWT principle: JWT principle Configuring JWT (1) Write the JWT configuration node, and create two configuration items SecKey and ExpireSeconds under the node, which represent the key and expiration time of the JWT respectively (I configured it here in appsettings.json, the expiration time unit is seconds, you can adjust it according to your own situation […]
[SpringBoot] Handwriting simulates the core process of SpringBoot
Dependency package Create a new project containing two modules: springboot module, representing springboot source code implementation;The user module represents the business system and uses the springboot module; Dependency packages: Spring, SpringMVC, Tomcat, etc., introduce dependencies as follows: <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>5.3.18</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>5.3.18</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.3.18</version> </dependency> <dependency> <groupId>javax.servlet</groupId> […]
Develop a modern .NetCore console program, including dependency injection/configuration/logging and other elements
1Foreword There are a lot of scenarios where gadgets need to be developed recently. Last time I developed a hive export tool using the go language. The experience was pretty good, but I really don’t like the syntax of the go language. This time I will try to use C# to develop gadgets. The function […]
[Xinghai Essay] SDN neutron (2) core-plugin (ML2)
Neutron Architecture Neutron-plugin Core-plugin (ML2) Neutron-server receives two types of requests: REST API request: Receive REST API request and distribute the REST API to the corresponding Plugin (L3RouterPlugin). RPC request: Receive Plugin agent request and distribute it to the corresponding Plugin (NeutronL3agent). Neutron-plugin is divided into Core-plugin and Service-plugin. Core-plugin: ML2 is responsible for managing […]
[Analysis of Spring’s underlying core architecture concepts]
Article directory 1. BeanDefinition 2. BeanDefinitionReader 2.1. AnnotatedBeanDefinitionReader 2.2.XmlBeanDefinitionReader 5. ClassPathBeanDefinitionScanner 6. BeanFactory 7. ApplicationContext 7.1. AnnotationConfigApplicationContext 7.2. ClassPathXmlApplicationContext 8. Type conversion 8.1.PropertyEditor 8.2.ConversionService 8.3. TypeConverter 9. FactoryBean 10. ExcludeFilter and IncludeFilter 11. MetadataReader, ClassMetadata, AnnotationMetadata Prepare the test object User in advance: public class User {<!– –> public User(int flag, String uuid){<!– –> System.out.println(flag […]
Valgrind compatibility analysis: from core dependencies to error diagnosis
Directory title 1. Introduction: Overview and Importance of Valgrind Basic Functions of Valgrind Application Scenarios in Software Development (Application Scenarios in Software Development) 2. Dependencies of Valgrind Introduction to Core Dependency Libraries (Core Dependency Libraries) 2.2 Optional Dependencies and Enhanced Features 3. Compilation and Installation: Adding Library Support (Compilation and Installation: Adding Library Support) 3.1 […]