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How to understand shallow copy and deep copy

1, Data type storage There are two data types...
16:44 7 September 2021

Mad YYDS MySQL Learning Notes

#MySQL MySQL is a relational database management system 5...
12:29 7 September 2021

Flink streaming API

5. Flink streaming API Implicit transformation in Scala programming import org.apache.flink.streaming.api.scala._ impo...
20:29 6 September 2021

[penetration test] Lin.Security target penetration exercise_ Virtual machine cannot obtain ip configuration method + target machine multiple rights raising methods

Target description: in.security, we hope to develop a Linux virtual machine, which is based on the latest Ubuntu distrib...
16:56 6 September 2021

Oracle to PostgreSQL start with / connect by

Oracle hierarchical query start with / connect by in Orac...
13:54 6 September 2021

[script] Swiss Army knife pandas for data processing

1, Pandas introduction In Python, pandas incl...
17:55 5 September 2021

SpringCloud Learning Four (Hystrix: Service Rupture, Service Degradation, Dashboard Flow Monitoring)

1. Hystrix: service is broken 1.1. Problems with Distributed Systems ...
14:28 5 September 2021

[optimization solution] Based on biogeography combined with gravity search optimization algorithm matlab source code

1, Gravity search algorithm   1.1BBO algorithm ...
19:30 4 September 2021

Tomcat architecture and lifecycle and event listening

Talk about the architecture, life cycle and event monitoring mechanism of tomcat, because there are many things, which w...
16:12 4 September 2021

For seniors who haven't graduated yet, learn the daily sharing Day1 of Java

Currently studying Mybatis         At present, I am learning mybatis. The best helper to learn mybat...
15:45 4 September 2021

Xiaodi penetration & WEB vulnerability (iii-ii)

Video resources 20. File upload basis and filtering method (20-24) What is a file upload vulnerability? It refers to ...
23:59 3 September 2021

[data structure] - inverse Polish expression

Introduction to inverse Polish expression &nb...
15:01 3 September 2021

Shell programming specification and variables

introduction In some complex Linux maintenance work, a large number of repetitive input and interactive operations are n...
13:49 3 September 2021

SSL certificates configure Https based on Nginx

Little bird's personal blog has been officially launched and opened to the outside world ...
1:34 3 September 2021

Clustering algorithm learning

1,k-mean Source: https://www.pianshen.com/article/7840142921/ ...
0:47 3 September 2021

Day2 Sorting Query & common function query and case explanation (unfinished)

preface         I studied...
22:17 2 September 2021

Have you learned the necessary framework knowledge for interface automation testing?

In this chapter, we will learn the @ Test annotation and the use of various parameters in detail. We have created sever...
20:52 2 September 2021

CMake easy to get started

reference resources Link 1 Official course Reference PDF:CMake practice Extraction code: tjyr ...
16:28 2 September 2021

Flink window Basics

Flink window Foundation (I) 1. Wi...
4:36 2 September 2021

The five cores of the Webpack introductory tutorial [entry, output, mode, loader (regular expression), plugin], configuration files, plug-ins, css and pictures in the processing project

Introduction to Webpack (I) five cores [entry, output, mode, loader (regular expression), plugin], configuration file, p...
2:38 2 September 2021

FFmpeg Code Framework for FFmpeg Open Course, Ali Middleware

2. Open the video file avformat_open_input(&a...
22:07 1 September 2021

day10 object oriented programming

1. Array Select sort Train of thought analysi...
17:37 1 September 2021

GO -- define variables, constants, enumerations

Domestic download address: https://studygolang.com/dl ...
15:50 1 September 2021

Tree of data structures and algorithms

Binary tree Why do you need a tree data structure Analysis of array storage mode Advantages: it is fast to access elemen...
14:44 1 September 2021

Flutter 7 Summary, Open Source First

Here is a widget tree drawn while learning Although it's half the way from the full version, it's enough to get started,...
13:03 1 September 2021

Force deduction linked list - Simple (double pointer, array list, recursion, speed pointer)

Give you the head node of a single linked list head,Please judge whether the linked list is a palindrome linked list
18:03 8 July 2021

iOS Super Signature Principle

First, introduce the third-party companies that have achieved super-signature
13:36 8 July 2021

Using the _Unwind_Backtrace function to grab the backtrace of the C/C++ stack

The sample code grabs the backtrace of function calls in both normal calls and crash cases
13:34 8 July 2021

About replication status in PostgreSQL logical subscription

After opening logical subscription, we need to know the status of replication. This can be obtained from several system tables or views in PG
13:32 8 July 2021

SpringBoot implements multiple data source configuration

Spring boot for multi data source configuration ...
12:04 20 July 2020