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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

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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

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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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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

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in php any value has a unique string representation (such as the php code itself). I post this question to speed up the design process of this program. Some values are easily converted to strings: numbers, booleans, etc. Some are not easy: objects, arrays, resources. I think the transfer object and

2023-09-05 15:34:44

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jquery realizes the color changing effect of clicking the corresponding row in the table [example code]_jquery

Course Introduction：The editor below will bring you a jquery implementation of the color change function of clicking the corresponding row in the table [example code]. The editor thinks it’s pretty good, so I’ll share it with you now and give it as a reference.

2016-05-16 comment 0 2059

jQuery easily realizes the example code of changing the color of every other row of the table and changing the color of the clicked row_jquery

Course Introduction：Below, the editor will bring you an example code that uses jQuery to easily change the color of every other row of a table and change the color of clicked rows. The editor thinks it’s pretty good, so I’ll share it with you now and give it as a reference. Let’s follow the editor and take a look.

2016-05-16 comment 0 1523

Code generation and automation for custom golang function implementation

Course Introduction：In Go, code generation and automation can be achieved by creating custom functions. The code generation function receives a parameter list and returns the generated code and an error. Automation functions automate tasks using formatted output, receive a parameter list, and return an error. The practical case includes a function that can generate a configuration file based on parameters.

2024-04-27 comment 0 872

PHP Development Guide: Implementing a complete product multi-specification SKU system

Course Introduction：PHP Development Guide: Implementing a Complete Product Multi-Specification SKU System In the field of e-commerce, the product multi-specification SKU system is very common. It can help merchants clearly display different specifications and attributes of products and provide users with a better shopping experience. This article will introduce how to implement a complete product multi-specification SKU system in PHP development, and attach code examples. 1. Database design First, we need to design the database table structure required by the product multi-specification SKU system. The following is a simple example: product table (product

2023-09-05 comment 0 1629

How to use PHP programming language to create product multi-specification SKU function

Course Introduction：How to use the PHP programming language to create multi-specification SKU functions for products. With the prosperity and development of e-commerce, the increase in product diversity and specifications has become an important issue faced by merchants. In order to better manage product information and provide more purchasing options, we need to implement the multi-specification SKU function of the product. This article will introduce how to use the PHP programming language to create multi-specification SKU functions for products, and provide relevant code examples. 1. Design the database table structure. Before starting to write PHP code, we need to design the database table structure first.

2023-09-05 comment 0 971

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