Reflection mechanism of Java learning summary
Overview of reflection mechanism 1. Function of reflection bytecode files can be operated through the reflection mechanism in java language (bytecode files can be read and modified) 2. Related classes of reflection mechanism are in java.lang.reflect. *; Classes related to reflection mechanism (UTF-8...
Posted by dude81 on Sun, 24 Oct 2021 06:06:20 +0530
Asynchronous task scheduling and timing trigger of celery developed in python_ Timed task beat
introduce Celery can be executed asynchronously or triggered by scheduled tasks Environmental preparation redis is used as the middleware, and the version used by django is v2.1.2 Install the third-party package required by django. Pay attention to the version number pip install celery==3.1.26UTF-8...
Posted by trilbyfish on Sun, 24 Oct 2021 09:22:36 +0530
Snowflake algorithm for distributed unique ID“
What is the snowflake algorithm? What does it have to do with distributed unique IDs? Why do I need distributed IDS? Don't worry, wait for Lord Hong to come with you. First, let's talk about the distributed unique ID. with the development of the Internet and the evolution of service, our singleUTF-8...
Posted by zako234 on Sun, 24 Oct 2021 10:15:53 +0530
[front end and back end separation] Spring Security + Redis + JWT realizes dynamic permission management
Project environment Environment of this article: Spring Boot + Mybatis + Spring Security + Redis + JWT Expected results: realize the front and rear end separation project with verification code verification and RBAC authority control Note: why use Json Web Token (JWT)? This is because in the frUTF-8...
Posted by Perryl7 on Sun, 24 Oct 2021 10:25:54 +0530
Development history of I/O in Java - BIO
preface Before learning Netty, we should first understand the growth process of Java's I/O capability and some key components in this process, so as to lay a solid foundation for subsequent Netty learning. The support for I/O capability in Java is mainly divided into three key stages: the firstUTF-8...
Posted by Andre_Ng on Sun, 24 Oct 2021 20:35:57 +0530
Java process control
1, Scanner object In the basic syntax we learned before, we did not realize the interaction between programs and people, but Java provides us with such a tool class that we can obtain user input. java.util.Scanner is a new feature of Java 5. We can get user input through the scanner class.BasicUTF-8...
Posted by grandeclectus on Sun, 24 Oct 2021 20:37:32 +0530
go language learning notes - Basics - control flow: if conditional (Branch) statements
Conditional statements require developers to determine whether to execute the specified statement by specifying one or more conditions and judging whether the condition is true. If condition is false, another statement is executed. The following figure shows the structure of conditional statemeUTF-8...
Posted by JMJimmy on Mon, 25 Oct 2021 08:14:43 +0530
22PYTHON learning summary
10.22PYTHON learning summary String formatting Solution to uncertain string content name = 'Xiao Ming' age = 18 money = 23891.23 Scheme I: String splicing message = name + 'this year' + str(age) + 'Years old, monthly salary:' + str(money) + 'element' print(message) Scheme II: String format placUTF-8...
Posted by storyboo on Mon, 25 Oct 2021 08:55:10 +0530
That is great! 11 "Python dictionary" knowledge points easy to use!
The python dictionary is a very important data type in Python. After you learn the basic knowledge, the concept of dictionary will accompany your later study and work. Therefore, here are some very important knowledge points that we need to know. Like to like, support and collect. A technical eUTF-8...
Posted by thedualmind on Mon, 25 Oct 2021 09:03:44 +0530
Branch (select) statement
For a better reading experience, it is recommended to go to the author's personal library Knowledge base home page read Part 1 concept introduction 1, Statement Separated by a semicolon is a statement, such as: int a = 10; It's just a statement 2, Three structures in C language ① Sequential strUTF-8...
Posted by edontee on Mon, 25 Oct 2021 09:55:47 +0530