Expression expression tree

1, Understanding Expression 1. In the last article, we talked about Entrust (forget to take a look at it, like it and form a habit). Today's expression has a little relationship with delegation (no direct relationship, just want you to see my other articles). Expression is prepared by. NET for Linq to Sql, and its named space is System.Linq.Exp ...

Posted on Tue, 17 Mar 2020 00:48:42 -0700 by Ashh RA

Comparison between java and python classes

1. constructor Methods and variables super,self,this 4. python code instance class Test(): # Class attribute country = 'China' province = 'Shaanxi Province' city = 'Xi'an City' readme = 'I am a parent class property' # Member attribute def __init__(self, name, ...

Posted on Mon, 16 Mar 2020 19:28:41 -0700 by ghostrider1

Source code of ValueAnimator and related interpretation of interpolator estimator

Preface This article from the beginning to the end of animation, a process to understand the source of animation. Read the relationship between classes in the source code. The relationship between the interpolator and the estimator is explained. problem Question 1: animation involves multiple animat ...

Posted on Mon, 16 Mar 2020 04:24:25 -0700 by UrbanCondor

Shadow Tracker: a lightweight front-end sensorless monitoring framework

Written in front Shadow tracker official website address: click here Shadow tracker code warehouse: click here 1, introduction Shadow tracker is a lightweight front-end sensorless monitoring plug-in, which provides the following functions: Serial number function Corresponding log type 1 Collec ...

Posted on Mon, 16 Mar 2020 03:33:30 -0700 by whitelion

Spring's dependency injection DI

Dependency injection (DI) and inversion of control (IoC) are the same thing described from different perspectives, that is, by introducing IoC containers and using dependency injection to achieve decoupling between objects Dependency injection mode: 1. Construction method injection 2. setter method inje ...

Posted on Mon, 16 Mar 2020 03:30:02 -0700 by donturo

Introduction to Python crawler common libraries (requests, beautifulsop, lxml, json)

1. requests Library http The most common protocol is GET Method: import requests response = requests.get('http://www.baidu.com') print(response.status_code) # Print status code print(response.url) # Print request url print(response.headers) # Printhead information print(response.cookies) # Printing cookie information print ...

Posted on Sun, 15 Mar 2020 22:06:51 -0700 by Concat

19 array definition and access

Chapter 19 array definition and access Author: Zhang Zimo 1, Concept of container A container is a storage structure that can store multiple data together. Each data is called an element of the container. **Containers in life: * * water cup, wardrobe, classroom 2, The concept of array Array ...

Posted on Sun, 15 Mar 2020 03:47:47 -0700 by straycat

Typescript learning record interface

Attribute type interface Interface describing object properties On Interface To restrict the properties of an object, you can use {} directly, but it is not convenient to reuse //Here {firstName: string} is used to restrict the type of name function printName(name: { firstName: string }) { ...

Posted on Sun, 15 Mar 2020 02:43:53 -0700 by tbobker

JavaScript -- the encapsulation of WEBAPIS UU deep animation function, common webpage special effects

Deep encapsulation of animation functions 1. Encapsulation of animation function 1.1 realization of slow motion effect Here are some core algorithms, (target value - current position) / 10 = step size of each move Take a specific effect, for example, slowing down an element, Implementation idea: let the moving distance of the element change, ...

Posted on Sat, 14 Mar 2020 23:13:55 -0700 by lovelf

[enjoy learning Netflix] 39. Source code analysis of Ribbon core API: detailed explanation of Ribbon coreiclientconfig

Any fool can write code that can be understood by machines. Only good programmers can write code that can be understood by humans. - > return to the column directory Code download address: https://github.com/f641385712/netflix-learning Catalog Preface text IClientConfig DefaultClientConfigImpl A ...

Posted on Sat, 14 Mar 2020 21:42:42 -0700 by svihas