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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11338

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 17642

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 11352

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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Personalize the look of Select2 Dropdown

In my case, I'm using select2Combobox for my dropdown. Here, when the Country selection changes, I pass that selected id to the JSON result and get the result, assigned to the Province combo box. When this happens, the dropdown view changes from round edges to square. I want to know how to add the same style to select2 combobox. Here is my code. <divclass="col-md-6col-sm-6"><divclass=&q

2024-04-03 11:27:22

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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JSON HTML realizes the effect of national, provincial and municipal linkage selection_javascript skills

Course Introduction：There are many ways to achieve national, provincial and municipal linkage. This article will introduce to you how to implement JSON HTML. Friends who need it can refer to it.

2016-05-16 comment 0 1369

PHP obtains countries, provinces, cities, and surrounding data based on geographical coordinates

Course Introduction：: This article mainly introduces PHP to obtain countries, provinces, cities, and surrounding data based on geographical coordinates. Students who are interested in PHP tutorials can refer to it.

2016-08-08 comment 0 1178

Use PHP to obtain countries, provinces, cities, and surrounding data based on geographical coordinates

Course Introduction：Function: When the App obtains the user's geographical coordinates, it can know based on the coordinates which country, province, city, and surrounding data the user is currently in. Principle: Based on Baidu Geocoding API implementation, you need to register as a Baidu developer first, and then apply for Baidu AK (key)

2018-06-09 comment 0 2862

Develop WeChat public platform to obtain basic user information

Course Introduction：This article introduces how to obtain the basic information of users followed on the WeChat public platform, including nickname, avatar, gender, country, province, city, and language.

2017-03-25 comment 0 2422

Java implementation of Map collection secondary linkage method analysis

Course Introduction：The Map collection can save key-value mapping relationships, which is very suitable for the data structure required by this example. All province information can be saved as the keys of the Map collection, and each key can save the corresponding city information. This example is implemented using the Map collection. Province and city cascade selection boxes, when province information is selected, the corresponding content of the city drop-down selection box will be changed. Idea analysis: 1. Create a national (province, municipality, autonomous region) mapping collection, that is, a LinkedHashMap object, and use the put() method of the Map interface to add the specified mapping relationship between provinces and cities to the collection.

2017-07-20 comment 0 1374

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