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Use JavaScript to complete the control drop-down list and select left and right

Use JS to control the left and right selection of the drop-down list ...
11:07 6 May 2020

Solve 1032 error report of online master-slave replication

The reason for the error is that the master database service is restarted abnormally, which causes the slave database re...
10:09 6 May 2020

Functions in ES6 (function parameters, default values, arrow functions)

1, Deconstruction and assignment of function parameters function foo([a,b]) { console.log(a+b); // 3 } foo([1,2]); funct...
4:07 6 May 2020

Multithreading and high concurrent programming -- Future source code analysis

1, Concept A result of Future calculation. Pr...
3:14 6 May 2020

The magic of indexers: reading configuration files

GPS platform, website construction, software development, system operation and maintenance, find Senda network technolog...
0:05 6 May 2020

Cloning and serializing applications

Clone Before we start to learn about cloning,...
23:53 5 May 2020

Exploration of ConcurrentHashMap Principle for Java Concurrent Programming Notes

In a multithreaded environment, data loss occurs when HashMap is used for put operations. To avoid the potential for thi...
23:06 5 May 2020

Flume study notes

Official documents ...
23:01 5 May 2020

When Turtle meets Conan?

Cooperative students Student No.: 20181703112, Luo Zijian Student No.: 20181101052, Jiang ruohui Our ideas 1. Conventio...
22:20 5 May 2020

Java build tools Maven and Gradle

What is a build tool? A build tool is a program that aut...
20:20 5 May 2020

Data Source Management | Synchronize data and source analysis based on DataX components

Source code for this article: GitHub. Click here || GitEE. Click here 1. Introduction to DataX Tools ...
20:13 5 May 2020

MySql basic instructions

1. Start MySql /etc/init.d/mysql start Run successfully: ...
19:45 5 May 2020

Design Mode (Java Language) - Prototype Mode

Prototype Pattern, also known as Clone Pattern, is a creative design pattern used to create duplicate objects, providing...
19:31 5 May 2020

The role of wrapper ﹣ PG ﹣ dir

During the initialization of the memory system, there are the following codes: ...
19:31 5 May 2020

WeChat official account development (1) WeChat verifies the developer server interface

Wechat verification developer server interface Wechat verification developer server interface As shown in the figure, ...
18:56 5 May 2020

Simple implementation of JDK dynamic agent and cglib agent mode in aop

1. JDK proxy example JDK dynamic agent can only generate ...
18:46 5 May 2020

Object arrays are sorted by the properties of an object

The most common way to sort an array is to sort by the first letter or number size of the elements in the array using th...
16:57 5 May 2020

A little exercise of function returning pointer value -- dealing with student's score

Topic: there are 4 students and 5 courses in a class. Write three functions respectively to realize the following functi...
16:12 5 May 2020

Instructions for mysql5.7 General tablespace

Note: the content of the article originated from the network and was obtained through our own experiment; however, the r...
15:22 5 May 2020

How the Flutter system implements the ExpansionPanelList

Laomeng Guide: the Flutter component has a big feature, that is, many complex components are assembled by one small component. Today, I'll talk ...
15:18 5 May 2020

Source code analysis of start and stop of Spring Boot Dubbo application

Author: Zhang Huxing source: Dubbo official blog ...
15:16 5 May 2020

Implementation of simple task scheduling in spring

1 Introduction The two kinds of task scheduli...
14:51 5 May 2020

Polygon game (DP)

Description Polygon game is a game played by...
14:37 5 May 2020

kuangbin topic 10 HDU1045 (dichotomous orDFS)

Title: Here's a picture for you. "Chen" stands for the wall, and ".." stands for walking. Now we ne...
14:28 5 May 2020

It's cool to play zombie game in Python

Introduction to the game In the past, the popular zombie game of plant vs. zombie, I wanted to find a python version of ...
13:51 5 May 2020

Oracle (PLSQL) introduction 7

Learning video: https://www.bilibili.com/video/BV1tJ411r7EC?p=74 Design database steps: Good database design: save space...
13:48 5 May 2020

CSS layout page layout

Web page is essentially the location between blocks, blocks next to blocks, blocks nested blocks, blocks stacked blocks....
13:00 5 May 2020

Python List Data Type (list) [Learn Python Essentials] [Read this article is enough]

Your "concern" and "compliment" are trust, recognition, support and motivation... ...
11:35 5 May 2020

Shell script introduction, structure, execution, date usage

Shell script introduction Shell is a program...
11:18 5 May 2020

Step by step to complete Kubernetes binary deployment -- flannel network configuration (single node)

Step by step to complete the binary deployment of Kubernetes (II) - flannel network configuration (single node) Preface ...
11:16 5 May 2020