A brief look at es6 deconstruction assignment

Ah, I'm really too hard. Today, I'm annoyed by this deconstruction assignment (also called deconstruction. It seems that the deconstruction assignment is in c + +, so I'm called deconstruction assignment here). I thought it was easy, but I still got it for a long time... Let's summarize the deconstruction!   1. Basic use of deconstruction What ...

Posted on Sun, 08 Dec 2019 12:36:16 -0500 by louis567

Spring IOC container assembly Bean based on annotation configuration

bean instantiation 1. Import jar package (necessary) 2. Instantiate bean applicationContext.xml(xml writing method) <bean id="userDao" class="com.igeekhome.dao.impl.UserDao"></bean> How to write notes First, enable annotation scanning in applicationContext.xml (and introduce context namespace) <?xml version="1.0" encoding="UT ...

Posted on Sun, 08 Dec 2019 12:12:41 -0500 by cobalt30

Mobile terminal click through

Touch screen event of mobile terminal The development of the mobile terminal often needs to monitor the user's touch behavior. There are several touch events on the mobile terminal: Touch start triggered when a finger touches the screen, even if there is already a finger on the screen touchmove finger triggered when the screen is sliding Trigg ...

Posted on Sun, 08 Dec 2019 09:53:33 -0500 by ShogunWarrior

Class 3 attribute summary class 3.4 method summary class 3.5 rc script (class definition and script structure)

3.3 attribute summary Class attribute (public attribute) Private attributes Public properties of objects Private property of object Built-in attributes Local variable of function global variable class MyClass(object): var1 = "Public properties of class" __var2 = "Private property of class" def func1(self): self.var3 = "Public properties o ...

Posted on Sun, 08 Dec 2019 09:41:06 -0500 by youngloopy

How to draw any angle fan in CSS

The principle of fan-shaped production: a solid color prototype at the bottom, two semicircles of the same color inside, which can be white, and the internal semicircle can be changed at a certain angle to produce a fan-shaped effect < / pre > <html> <head> <meta charset="UTF-8"> <title>Sector rend ...

Posted on Sun, 08 Dec 2019 07:50:15 -0500 by jazzydog

Day 21 - basic modules

#Module: module is the result of classifying the code with specific functions#At present, all py pieces written are modules#Introduction method:#1.import module#2.from xxx import module#At present, the advanced framework behind the python built-in module needs to be additionally installed with a third-party module #collections module:#1.Counter ...

Posted on Sun, 08 Dec 2019 01:02:02 -0500 by west4me

Frame animation developed by Android

Android animation is mainly divided into three types View animation( View animation developed by Android) Frame animation Attribute animation What is frame animation? Frame animation is the simplest. It is generated by playing a series of images in sequence, which is similar to animation Explain with tomcat case 1. First, prepare ...

Posted on Sat, 07 Dec 2019 22:34:31 -0500 by l_evans

Native JS uploads images to receive server-side images and displays them (mainly describing blob type)

1. Understand the way of image processing in the back end One: the pictures are stored in the designated folder of the server in the form of independent files, and then the path is stored in the database fieldSecond, convert the Image to blob and store it directly in the Image type field of the database (this method is too heavy to be recommend ...

Posted on Sat, 07 Dec 2019 20:31:17 -0500 by phil_j_poore

Android device access to alicloud IoT platform

1. Preparation 1.1 register alicloud account Use personal Taobao account or cell phone number to open the account of Ali cloud, and pass the real name authentication (can be certified by Alipay). 1.2 free IoT Suite Product official website https://www.aliyun.com/product/iot 1.3 software environment JDK installation Editor IDEA 2. Development s ...

Posted on Sat, 07 Dec 2019 16:25:13 -0500 by isedeasy

beanfactory of containers

1. As we all know, the top-level interface of spring ioc function implementation is BeanFactory. As shown below This one is more comprehensive: And more perverted 2.BeanFactory is the top-level interface, which defines the core interface to be implemented package org.springframework.beans.factory; public interface BeanFactory { /** ...

Posted on Sat, 07 Dec 2019 13:49:28 -0500 by successor