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EF Data Migration

EF automatic data migration is always a failure. At the beginning, it is all right. It can migrate automatically and fail to know why it always fails...
18:30 2 October 2019

python interacts with database mysql

Operate mysql through pycharm's concise code block to help us understand The concrete steps can be divided into five steps. 1. Install and insta...
9:46 2 October 2019

Netty implements synchronous "request-response" communication mechanism

demand Implementation of Netty-based "request-response" synchronous communication mechanism. Design thinking Netty provides a unified implem...
10:15 26 September 2019

Kylin configures Spark and builds Cube

HDP version: 2.6.4.0Kylin version: 2.5.1 Machine: Three CentOS-7,8G memory In addition to MapReduce, Kylin's computing engine also has a faster S...
12:08 24 September 2019

Details Python operation Excel files

Preface This article summarizes the third-party libraries and methods for working with Excel files using python. Introduction to Common Libraries 1.x...
22:15 2 September 2019

Computing the Memory Occupied by object in android jvmti Application

The day before yesterday, I was aware of the question: What is the principle of Apply Changes provided by Android Studio 3.5? One responded to JVMTI,...
9:34 22 August 2019

django - Editing Students

Adding Editor Links to Student List Page Write routes so that the path corresponds to the view function skill, quickly create view functions Editing ...
4:59 9 August 2019

C3P0&Druid: Two Methods of Using Database Connection Pool

Database Connection Pool-C3P0 & Druid (1) Database connection pool Everything has its existence significance. When we first learn jdbc, we set up ...
7:51 8 August 2019

Mybatis Initial Learning Notes

Mybatis Initial Learning Notes (II) 1. Mybatis implements the development of traditional dao 2. Development of mapper interface 3. Output ResultMap 3...
6:14 6 August 2019

JDBC: You always have to learn to connect to a database!

BWH_Steven: Love you again with JDBC (1) Getting started with JDBC (1) Overview Java Database Connectivity (JDBC) is an application interface in the J...
0:02 4 August 2019

1-Develop Shared APP (Build Guide) - Build your own server quickly

The APP installation package download link: http://www.mnif.cn/appapk/IotDevelopmentVersion/20190730/app-debug.apk Or scan for QR code download Access...
14:53 30 July 2019

Practice VxLAN under Linux

This article was first published in my public number Linux cloud computing network (id: cloud_dev), focusing on dry goods sharing. There are 10T books...
4:06 29 July 2019

C# Learning Records Read Excel with OleDB

The project requires me to read an Excel form. The way on the Internet is to use Excel as a data source and OleDB to read it. As I understand it, Ole...
3:10 29 July 2019

Fields and field parameters of the model

Introduction to ORM 1. Concept: ORM (Object Relational Mapping), Object Relational Mapping 2. Essence: mapping between classes and databases 3. Advant...
10:42 28 July 2019

Getting Started with Webrtc Video Communications

Getting Started with Webrtc Video Communications WebRTC, named after Web Instant Messaging, is an open source W3C recommendation that was incorporate...
23:09 25 July 2019

Parsing xml files using SAX

SAX parsing using JAXP (XMLReaderFactory, XMLReader, SAXParserFactory, and SAXParser) 1. We do this through XMLReaderFactory, XMLReader, as follows 1....
13:49 13 July 2019

Java Basic Tutorial - Conversion Stream

Conversion flow Usually, the default encoding method for Window s is GBK, and UTF-8 encoding is generally recommended for Java projects. At this time,...
18:11 12 July 2019

(Rotate) Use Toolbar + DrawerLayout to Achieve High and Large Side-Slip Menu Quickly

Original address: http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0303/2522.html If you're looking at applications that follow the lat...
19:02 11 July 2019

C#Learning Notes-English Switching (XML)

These days, because the software needs to be in English, I have searched for a long time and found relevant information. Source reference: http://blog...
12:58 10 July 2019

Requs Library - Web Crawler

Introduction to requests Library Official documents: requests quick start It is written in great detail and recommended to read the official document...
12:40 10 July 2019

Android attribute animation to achieve the cool effect of frame animation

Recently, the company let a very dazzling animation, the first thought is to use frame animation, and then think of too many pictures, using frame ani...
18:14 9 July 2019

angular Cache Method for post Request

problem By default, angular's $http caches only the request data for "get" and "jsonp". Source code analysis of angular $htt...
16:19 9 July 2019

Login page to save account password

Implementing "Remember Me" through Cookie 1. The landing page is as follows: The attribute name s corresponding to each field are as follow...
20:46 8 July 2019

ViewPager Details (5) - - Using Fragment to Realize ViewPager Sliding

ViewPager Details (5) - - Using Fragment to Realize ViewPager Sliding 2014-08-18 15:03 61791 people read comment(34) Collection Report This article h...
15:28 8 July 2019

AFHTTPSessionManager for AFNetWorking Source

1 Overview AFHTTPSessionManager is a subclass of AFURLSessionManager.We can make HTTP requests through this class.In fact, the whole AFHTTPSessionMana...
13:33 7 July 2019

android layout optimization and rendering optimization

Firstly, several optimization methods of android layout are introduced below. 1. include tag: You can allow another layout to be introduced in one lay...
21:54 4 July 2019

KVC and KVO in Javascript and variable listening

KVC and KVO in Javascript and variable listening KVC(Key Value Coding) and KVO(Key Value Observing) are terms in Objective-C (Swift is also supported...
15:13 4 July 2019

Deep Understanding of FastCGI Protocol and Its Implementation in PHP

Before discussing FastCGI, we have to say how traditional CGI works, and at the same time we should have a general understanding of it. CGI 1.1 Agreem...
21:39 20 June 2019

Several communication modes between React-Native and native modules

Each language has its own design concept, grammar and running environment, which also leads to the need for intermediaries to translate when different...
13:48 11 June 2019

format of nginx default configuration syntax and log

nginx default configuration To see which default configuration files are available for nginx, open the / etc/nginx/nginx.conf file to see the end line...
13:00 11 June 2019