Realization principle of linked list data structure

What is a linked list A common data storage structure is a linear table, but it does not store data in linear order, but each node stores the pointer of the next node. What is recursive algorithm In the data structure of linked list, we often use recursive algorithm. recursive algorithm It is a process of directly or indirectly calling algorith ...

Posted on Sat, 02 Nov 2019 06:24:51 -0400 by jamessw

Class file parsing

Class file structure Overall structure ClassFile { u4 magic; u2 minor_version; u2 major_version; u2 constant_pool_count; cp_info constant_pool[constant_pool_count-1]; u2 access_flags; u2 this_class; u2 super_class; u2 ...

Posted on Sat, 02 Nov 2019 03:38:03 -0400 by Chris.P

Spring transaction attribute details

To learn things, we need to integrate knowledge with practice. If we only know the theory but never practice it, we will not have a solid grasp of it. It is estimated that we will forget it in a few days. Next, we will practice together to learn the propagation properties of Spring transactions. Propagation attribute The propagation attribut ...

Posted on Sat, 02 Nov 2019 01:02:55 -0400 by lostsoul111455

05beautifulsop traverses the document book and searches the document tree

BeautifulSoup I. what is beautiful soup BS4 is a parsing library, which can help us extract the desired data through some kind of parser. Why use BS4 Because it can quickly extract what users want with simple syntax Three, installation # Install beautiful soup4 pip3 install beautifulsoup4 # Install resolver # According to the official website, ...

Posted on Fri, 01 Nov 2019 23:43:01 -0400 by dannymc1983

Introduction to WebApi of EF Core

It mainly describes the use of EF Core's CodeFirst to migrate database, simple interface addition, deletion, modification and query, and Swagger to generate interface documents. 1. New project create DbContext and entity model   (1) add ToDoDbContext and inherit DbContext 1 public class ToDoContext:DbContext 2 { 3 pu ...

Posted on Fri, 01 Nov 2019 23:26:06 -0400 by SuprSpy79

Meet jQuery from evolving source code

What is the essence of jQuery? A JavaScript library.Accept an old node and return a new object (hash), which is the jQuery object.The characteristic of jQuery is that it has its own API.The source code of jQuery calls DOM API, but jQuery objects cannot use DOM API. The convenience of jQuery jQuery greatly simplifies JS programming and is easy t ...

Posted on Fri, 01 Nov 2019 19:11:01 -0400 by nyy2000

Vue.js source code analysis instructions v-pre instruction details

This instruction will skip the compilation process of the element and its children, that is, treat this node and its children as a static node, for example: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="https://cdn.jsdelivr.net/npm/v ...

Posted on Fri, 01 Nov 2019 17:11:57 -0400 by shylock

Write a formula component with vue

Because recently received a requirement, there should be a formula editing module in the project, which may have the function of entering formulas and fields manually, and other modules can be modified manually. Du Niang and github haven't found a good wheel for a long time. There is no way but to write one by themselves to realize the basic fu ...

Posted on Fri, 01 Nov 2019 15:52:26 -0400 by phrater

Automatic layout of 3D model by matrix change

In mathematics, a matrix is a rectangular array of numbers, symbols, or expressions arranged in rows and columns. Any matrix can be multiplied by elements by scalars of related fields. The main application of matrix is to express linear transformation, that is, the generalization of linear functions such as f (x) = 4x. For example, the rotating ...

Posted on Fri, 01 Nov 2019 12:16:32 -0400 by jamesflynn

How to create a RESTful WCF Service

Original address: http://www.cnblogs.com/jfzhu/p/4044813.html Reprint please indicate the source   (I) web.config file To create a REST WCF Service, endpoint binding requires webHttpBinding. See Differences between webHttpBinding, basicHttpBinding and wsHttpBinding. web.config <?xml version="1.0"?> <configuration> ...

Posted on Fri, 01 Nov 2019 11:45:50 -0400 by Ryyo