Programmer Think

1. Careful coverage of clone 1. Common object overrides clone PhoneNumber public class PhoneNumber implements Cloneable{ private final short areaCode; private final short prefix; private final short lineNumber; public PhoneNumber(short areaCode, short prefix, short lineNumber) { super(); this.areaCode = areaCode; this.prefix = pref ...

This article is from: Chunge Personal Blog: http://www.liyuechun.orgAuthor: extension Li Yuechun - A Time-chasing ManIntroduction: JavaScript30 yes Wes Bos A 30-day challenge to launch. The project provides 30 video tutorials, 30 challenge start documents and 30 challenge solution source code free of charge. The goal is to help people write in ...

Three basic modules of twisted network framework: Protocol, ProtocolFactory, Transport. These three modules are the basic components of twisted server-side and client-side programs.Protocol: Protocol Object Implements Protocol Content, i.e. Communication Content ProtocolProtocolFactory: A representation of the factory pattern, where protocols a ...

Preface Loading pictures as needed is a very useful feature that not only improves the performance of the website, but also saves you traffic.For friends who use virtual hosts, if your website is a picture website or a website with more pictures, then lazy loading of pictures is a must. principle The principle of lazy loading ...

Database int, what is the length after the char field First come to the conclusion:The length of the int field has nothing to do with the length of the data you store, but with the display.The length of the char field is related to the length of the data you store int field length Start with int and look at the table below CREATE TABLE `test10` ...

In Android 5.0, touch feedback, or water ripple, was added. Use 1. When creating a new project, the default button usually has water ripple effect. If you want to delete it, you can specify a color for the view. Code: Android: background="? Android: attr / selectable ItemBackground" ripple with boundary Android: background= ...

Original address: http://blog.csdn.net/u011225840/article/details/30033501 1. Inheritance tree structure You can see that CCScrollView is essentially a kind of CCLayer with all the properties and methods of the layer.Source analysis for CCLayer will follow. 2. Important Members  1.  CCScrollViewDelegate* m_pDelegate; In ...

The use of wxss has brought about some changes in patterns and thinking for responsive development.WXSS(WeiXin Style Sheets) is a set of style languages used to describe the component style of WXML.WXSS is used to determine how components of WXML should be displayed.In order to adapt to the vast number of front-end developers, our WXSS has most ...

Demo and source code of this article have been put in GitHub, if you think this article is good, please point a compliment, or add a star to GitHub! https://github.com/zwl-jasmine95/Vue_test All of the following knowledge is based on vue.js version 2.0   Component is one of the most powerful functions of Vue. js. Components can extend HTML ...

Picture display is often involved in daily page development.Sometimes when there are too many picture resources, we want to delay the loading of pictures, and when the loading fails, we can use a default picture to display them instead.The effect is shown in the diagram: 1. Lazy loading of pictures In fact, the core idea of lazy loading pictur ...