First HTML file.html

HTML , 1, HTML introduction 1. What is HTML HTML: Hyper Text Markup Language All kinds of tags are used to make web pages and tell browsers how to display pages 2. Function Make web pages, control the display of web pages and content Insert picture, music, video, animation and other multimedia S ...

Posted by RobOgden on Mon, 29 Jun 2020 05:36:00 +0200

Common methods of current limiting in high concurrency system

In the development of high concurrency system, there are four tools to protect the system: diffluence, cache, degradation and flow restriction. Based on the author's experience, this paper introduces the related concepts, algorithms and conventional implementation of current limiting. Concept interp ...

Posted by plapeyre on Mon, 29 Jun 2020 04:11:04 +0200

Introduction to Cyclic Redundancy Check (CRC) algorithm written to embedded programmers

Preface CRC checks (cyclic redundancy checks) are the most commonly used checks in data communication.In embedded software development, CRC algorithm is often used to verify various data.Therefore, mastering basic CRC algorithms should be a basic skill for embedded programmers.However, few embedded pr ...

Posted by mispris006 on Sun, 28 Jun 2020 18:57:15 +0200

02-VGNet Learning Notes

02-VGNet Learning Notes The following are personal learning notes for reference only 1. What percentage of the parameters are less for three 3*3 convolutions in VGG than for one 7*7 convolution?(Assuming both input and output channels are C) 2. What is the difference between VGG-16 and VGG-19? 3. Wh ...

Posted by coolcat on Sun, 28 Jun 2020 18:42:46 +0200

Basic syntax of jQuery, selector, DOM operation

What is JS framework JS framework is also written in JavaScript language. The framework itself provides a lot of new methods, which can simplify JS code and improve development efficiency. To put it bluntly, it is a defined JS file that encapsulates many functions inside, which can greatly simplify ou ...

Posted by dhimok on Sun, 28 Jun 2020 04:43:26 +0200

Task 3 Mysql multi table & foreign key & database design

1 multi meter 1.1 multi table description In actual development, a project usually needs many tables to complete For example, the database of a shopping mall project needs many tables: user table, classification table, commodity table, order table 1.2 disadvantages of single table 1.2.1 table building C ...

Posted by powaz on Sat, 27 Jun 2020 10:16:57 +0200

The difference between int and int(11) in Mysql

[1] The difference between int(3) and int(11) (cognitive error of thinking inertia) Here, 3 or 11 represents the specific length stored in the database, always thinking that int(3) can only store 3 numbers of length, and int(11) can only store 11 numbers of length. [2] Mysql Basics When learning M ...

Posted by mmorton on Fri, 26 Jun 2020 03:45:53 +0200

One article tells you how much CPU branch prediction affects performance

originate stackoverflow Last question Why it is faster to deal with an ordered array than to deal with an array without it , there are some discussions in the original text. Let's first reproduce the results and then explain why! We have the following two sections of code. The code looks similar, but in fact, the logic is the same. They count t ...

Posted by ray-solomon on Thu, 25 Jun 2020 14:28:53 +0200

An analysis of leetcode's solution to 214-220 questions

Shortest palindrome string Given a string s, you can convert it to a palindrome string by adding characters before the string. Find and return the shortest palindrome string that can be converted in this way. You can use horse drawn cart to get the longest palindrome substring, and then add it in reve ...

Posted by manmanman on Thu, 25 Jun 2020 11:58:16 +0200

A detailed explanation of the drawing method of pandas data analysis

Previously introduced Detailed usage of matplotlib plot method , today we will introduce the drawing method in pandas. In essence, the drawing method encapsulated in pandas calls the drawing method of matplotlib. The basic plot method, the plot method of Series and DataFrame in pandas, is the plot ...

Posted by patheticsam on Thu, 25 Jun 2020 06:44:10 +0200