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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11329

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17632

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

Course Advanced 11344

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

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Super function in Python multiple inheritance?

{Code...} The super method can be used to call the method of the parent class, but how to use it in multiple inheritance? The above code class C will call the __init__ method of class A, but what should I write if I want to call the '__init__' method of class A and class B at the same time? Or just call class B...

2017-05-18 10:50:04

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

2023-09-05 11:18:47

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: .right-menu{...grid-auto-flow:columndense;...} If I remove the grid-auto-flow attribute, the overflow stops. However, the items are now stacked into multiple rows, which is not what I want. I also tried converting .ri

2023-09-05 15:18:28

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

2023-09-05 15:06:32

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Complete sample code sharing for C# to generate beautiful verification code

Course Introduction：This article mainly introduces the complete code class for generating beautiful verification codes in C#. Has very good reference value. Let’s take a look at it with the editor below.

2017-03-22 comment 0 1872

Detailed introduction to php thumbnail class

Course Introduction：In our PHP website development, we often need to process images. The most common one is to generate thumbnails for uploaded images or images in articles. Here are 10 codes for generating thumbnails using PHP summarized by PHP Chinese website for you. Use and download! 1. Use PHP to get the first picture in the article as a thumbnail code: Get the first picture from the text as a thumbnail code snippet of the article 2. Download a code class for PHP to generate image thumbnails: Share PHP to generate image thumbnails A code class for the sketch, containing the source address, new path,...

2017-06-10 comment 0 1884

How to recharge phone bills in php

Course Introduction：How to implement phone recharge in PHP: 1. Open the phone recharge interface; 2. Introduce the encapsulated code class; 3. Configure the basic information of the interface; 4. Submit the phone recharge order; 5. Push the status information to the corresponding URL; 6. Check whether recharge is supported based on the mobile phone and denomination; 7. Perform business logic processing through "if ($local_sign == $sign) {...}".

2022-10-20 comment 0 1859

Example of implementation ideas for querying IP location in PHP

Course Introduction：A PHP code class for querying the IP location, the offset address of the first IP index, and the offset address of the last IP index. In order to be compatible with versions below PHP5, this class does not use a destructor, automatically closes the IP library, and passes the IP through ip2long Convert the Internet address to IPv4, and then compress it into big-endian byte order for comparison with the IP address in the index area.

2017-08-18 comment 0 1341

How to install win7 operating system on computer

Course Introduction：Among computer operating systems, WIN7 system is a very classic computer operating system, so how to install win7 system? The editor below will introduce in detail how to install the win7 system on your computer. 1. First download the Xiaoyu system and reinstall the system software on your desktop computer. 2. Select the win7 system and click "Install this system". 3. Then start downloading the image of the win7 system. 4. After downloading, deploy the environment, and then click Restart Now after completion. 5. After restarting the computer, the Windows Manager page will appear. We choose the second one. 6. Return to the computer pe interface to continue the installation. 7. After completion, restart the computer. 8. Finally come to the desktop and the system installation is completed. One-click installation of win7 system

2023-07-16 comment 0 1203

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