Java Spring framework: the implementation of SpringIOC-5000 words

Implementation of SpringIOC 1.IOC interpretation 2. Code implementation 3. Realize IOC with parameterless constructor 4. use the constructor with parameters to realize IOC 5. Use factory mode to realize IOC Chain of responsibility: When we use mvc for development, data is transferred between diffe ...

Posted by jase01 on Fri, 26 Jun 2020 05:18:14 +0200

The difference between int and int(11) in Mysql

[1] The difference between int(3) and int(11) (cognitive error of thinking inertia) Here, 3 or 11 represents the specific length stored in the database, always thinking that int(3) can only store 3 numbers of length, and int(11) can only store 11 numbers of length. [2] Mysql Basics When learning M ...

Posted by mmorton on Fri, 26 Jun 2020 03:45:53 +0200

Source code analysis of working principle of nacos Distributed Configuration Center

nacos Distributed Configuration Center Personal Alibaba nacos Renovation Project: alibaba_nacos 1. Service Startup Configuration Loading Source: NacosPropertySourceLocator Workflow: Nacos customizes the PropertySourceLocator to get data from the configuration center at service startup, then add and re-run the local environment to load the confi ...

Posted by CanMan2004 on Thu, 25 Jun 2020 20:02:40 +0200

Python - [function decorator | closure] - Notes on reading (chao)

This article is from Chapter 7 of fluent Python (First Edition): function decorators and closures. Since I was just learning Python, taking notes can be said to be a complete transcription, and I'm becoming more and more apathetic at the back, so I don't want to copy (taking notes) anymore. From page p1 ...

Posted by webwiese on Thu, 25 Jun 2020 10:36:45 +0200

A detailed explanation of the drawing method of pandas data analysis

Previously introduced Detailed usage of matplotlib plot method , today we will introduce the drawing method in pandas. In essence, the drawing method encapsulated in pandas calls the drawing method of matplotlib. The basic plot method, the plot method of Series and DataFrame in pandas, is the plot ...

Posted by patheticsam on Thu, 25 Jun 2020 06:44:10 +0200

Vue 3.0 - Proxy

This article starts with the official account: qianduansuohua. Welcome. preface On April 17, Yuda announced the official release of Vue 3.0 beta on Weibo. In the article "Vue3 design process" released by Youda, it is mentioned that one of the considerations for refactoring Vue is the support level of JavaScript's new language feature ...

Posted by tolutlou on Wed, 24 Jun 2020 05:18:02 +0200

Spring-Cloud-Gateway Source Parsing - NettyRoutingFilter for Filter (4.7)

1. Overview This article mainly shares the code implementation of NettyRoutingFilter. NettyRoutingFilter, Netty Routing Gateway Filter.It uses a Netty-based HttpClient to request back-end Http services based on http:// or https:// Prefix (Scheme) filtering. NettyWriteResponseFilter, a gateway filt ...

Posted by keveen on Tue, 23 Jun 2020 18:34:50 +0200

HTML5 Notes + Cases

HTML Notes File extension Word.docx Excel.xlsx PPT.pptx How to open a file extension: [External chain picture transfer failed, source station may have anti-theft chain mechanism, it is recommended to save pictures and upload them directly (img-Vty2rmPe-15928773052) (D:Static Web Page MakingNotesNote ...

Posted by MannyG on Tue, 23 Jun 2020 04:11:34 +0200

Basic process of Python data analysis

Generally speaking, the basic process of data analysis includes the following steps: 1. Ask questions - the metrics we want to know (average consumption, age distribution of customers, turnover trends, etc.) 2. Import Data - Import the original data source into Jupyter Notebook (web crawlers, dat ...

Posted by master123467 on Tue, 23 Jun 2020 03:17:01 +0200

Summary: Classic crash of multithreading in iOS

preface iOS crash is a headache for iOS developers. App crashes, indicating that there is a problem in code writing. It is very important to quickly locate the crash site. It's easier to find the problem in the debugging phase, but it's more troublesome to analyze the crash report of the app that has been launched. This article will summarize a ...

Posted by darksniperx on Mon, 22 Jun 2020 09:02:04 +0200