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Self-study IT network Linux load balancing video tutorial

Course Intermediate 10920

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 16892

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 10613

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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regularexpression php regular expression regar expression

Course Introduction：regularexpression:regularexpression php regular expression regar expression: Introduction: When writing programs or web pages that process strings, there is often a need to find strings that match certain complex rules. Regular expressions are the syntax used to describe these rules. For example: when judging the user's email address format, mobile phone number format, or collecting the content of other people's web pages. PHP also often uses regular expressions. PHP has two commonly used regular expression functions: preg_match and ereg. I just watched preg_match today. Its specific writing method is preg_match(mode, string

2016-07-29 comment 0 1020

How to remove identical strings in php

Course Introduction：Method: 1. Use "implode("",array_unique(str_split(string, 1)));" to remove the same string; 2. Use "implode("",array_unique(preg_split(regular expression, string))) "Remove identical strings.

2020-09-03 comment 0 2739

Learn the regexp.MustCompile function in the Go language documentation to implement regular expression matching

Course Introduction：Learn the regexp.MustCompile function in the Go language documentation to implement regular expression matching. Regular expression (RegularExpression) is a powerful tool for matching, searching, and replacing strings. In the Go language, support for regular expressions is provided using the regexp package. The MustCompile function and FindString function are commonly used regular expression matching operations. In the Go language documentation, we can find a simpler

2023-11-03 comment 0 764

Commonly used regular expression syntax and usage tips in Java

Course Introduction：Common Java Regular Expression Grammar and Usage Tips Introduction: Regular expression (RegularExpression) is a powerful text matching tool that can be easily used to find, replace and verify strings. Regular expressions in Java are supported by the java.util.regex package. This article will introduce the common syntax and usage techniques of Java regular expressions, and provide specific code examples. Common Grammar 1.1 Character Class Character Class (CharacterClasses)

2024-01-09 comment 0 867

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