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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11327

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 11338

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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I encountered some difficulties when developing the WeChat applet calculator. There is an error that I can't figure out, but it seems to be the same as what is written in the video. Please give me some guidance.

I encountered some difficulties when developing the WeChat applet calculator. There is an error that I can't figure out, but it seems to be the same as what is written in the video. I would like to ask for guidance. For example, if you enter: "7+7", the result will be displayed as 14 normally, but the result will be 14. When I click the operator "+" a second time, the console displays an error! I clicked into the source and looked at the erroneous statement, but I couldn't find the error. I really can’t find the mistake. If you can provide detailed guidance, you can add qq: 1648407902. I wonder if Q&A can upload multiple pictures at one time. For the specific js file, please see what I uploaded.

2018-03-24 16:43:36

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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WeChat applet development: Flex layout

Course Introduction：WeChat applet development: Flex layout

2016-11-10 comment 0 2738

Window configuration diagram for WeChat applet development

Course Introduction：This article explains in detail the Window configuration of WeChat applet development

2017-03-14 comment 0 2631

Animation animation implementation for WeChat applet development

Course Introduction：This article mainly introduces the animation implementation of WeChat applet development

2018-07-18 comment 0 1666

Page jump method for WeChat applet development

Course Introduction：This article mainly introduces the page jump method of WeChat applet development

2018-07-18 comment 0 2305

The use of container views in WeChat applet development

Course Introduction：This time I will bring you the use of container views in WeChat applet development. What are the precautions for using container views in WeChat applet development? Here are practical cases, let’s take a look.

2018-06-05 comment 0 2000

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