The algorithm of python Development & data structure

The algorithm of python Development & data structure (4) data structure 1. Circular queue 2. Python queue built-in module 3. List 3.1 creating a linked list 3.2 insertion of linked list nodes 3.3 deletion of linked list nodes 4. Double linked list 4.1 insertion of double linked list nodes 4.2 ...

Posted by sm on Thu, 25 Jun 2020 02:27:58 -0700

Spring - third day of study (IOC at the core of Spring)

Spring Day 3 Introduction to AOP What is AOP? The Role and Advantage of AOP Effect advantage Introducing learning cases - adding transaction support to the business tier Terminology related to AOP Joinpoint Pointcut (entry point) Advice (Notification/Enhancement) Introduction (Introduction) Targe ...

Posted by dominod on Wed, 24 Jun 2020 19:09:26 -0700

What are the mechanisms, differences and meanings of mutually exclusive access to Linux multithreaded global variables?

Write before: Why write this article, I began to understand these three quantities very hard, gnawed for a long time "Modern Operating System", also read a lot of blogs, and finally a little experience.This article is based on that brick book and some blogs, with a personal summary and underst ...

Posted by SsirhC on Wed, 24 Jun 2020 18:49:52 -0700

Chain lists, trees, diagrams, and recursive notes in data structures

1. Structures Structures are important in data structures, so first understand the structure-related knowledge points. struct LNode{ int data; char name[20]; }; //struct is the keyword that defines the structure, and LNode is the name of the structure //For example, create an object for the previous ...

Posted by Lonepig on Wed, 24 Jun 2020 18:23:56 -0700

UVA - 12105 Bigger is Better(DP)

Portal First, such problems, dynamic programming of a number, are generally diverted from other residuals Then this topic uses a more important nature of large number redundancy, that is, large numbers can be manipulated one by one to achieve the purpose of redundancy, which can be referred to Here M ...

Posted by tomasd on Wed, 24 Jun 2020 18:21:14 -0700

10 Minutes Quick Start Shiro Beginners Tutorial

Current User Now we can start doing something that we really care about - performing security operations. When protecting our applications, the most relevant questions we may ask ourselves are "Who is the current user" or "Is the current user allowed to do XXX?" When we write code or design user interfaces, it is common to a ...

Posted by dkode on Tue, 23 Jun 2020 19:00:54 -0700

To learn Python well, you must understand 35 key words in Python

Every programming language has some special words called keywords. The basic requirement to treat keywords is to avoid repetition when naming them. This article introduces the keywords in Python. Keywords are not built-in functions or built-in object types. Although it's better not to rename them, you can also use names that are the same as bui ...

Posted by jockey_jockey on Tue, 23 Jun 2020 01:05:56 -0700

Java basic knowledge: object oriented

object-oriented 1. Definition of object-oriented Creating objects can be things or things. In the program, objects are used to map things in reality, and objects are used to describe the relationship between them.2, Features of object-orientedEncapsulation Encapsulation is the core idea of object-ori ...

Posted by tomlei on Mon, 22 Jun 2020 23:39:31 -0700

Python core

Python orchestration Basics Co programming is a way to realize concurrent programming example Simple reptiles import time def crawl_page(url): print('crawling {}'.format(url)) sleep_time = int(url.split('_')[-1]) time.sleep(sleep_time) print('OK {}'.format(url)) def main(urls): ...

Posted by jerastraub on Mon, 22 Jun 2020 22:14:24 -0700

What does Python mean by closures?

Closure is a common concept in programming language, but to be honest, the term is a bit obscure. After checking the information on the Internet for half a day, I still don't know what to do. What I wonder is: what kind of problem is this thing used to solve? Or what is his role? First of all, function After consulting many materials, the summa ...

Posted by saradrungta on Sun, 21 Jun 2020 21:57:13 -0700