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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11245

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 17581

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 11291

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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Vue Compute() not firing on reactive map

I have a reactive around a map that is initially empty: constmap=reactive({});, and a computation that tells if the map has a key "key": constmapContainsKeyCompulated=Computed(()=>map.hasOwnProperty(" key")). When I change the map, the calculations don't update. I've been stuck on this problem for a day and managed to come up with a minimal example that demonstrates the problem: &lt

2024-03-27 10:36:32

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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How to Keep Matplotlib Plotting Interactive While Computation Continues?

Course Introduction：Interactive Matplotlib Plotting While Computation ContinuesIn Python, matplotlib is a powerful library for data visualization. However, by...

2024-11-07 comment 0 744

Can constexpr Functions Guarantee Compile-Time String Length Computation?

Course Introduction：Compile-Time String Length Computation: Is It Truly constexpr?In an attempt to compute string length at compile time, a portion of code utilizes a...

2024-11-02 comment 0 215

How to Efficiently Exchange Edge Values of a 2D Array Using MPI for Distributed Matrix Computation?

Course Introduction：Sending and Receiving 2D Array over MPIQuestion:To improve performance, a large 2D matrix computation needs to be split and executed on multiple...

2024-11-09 comment 0 461

What are the Efficient and Elegant Techniques for Set Difference Computation in Javascript?

Course Introduction：Efficient and Elegant Set Difference Computation in JavascriptWhen dealing with set operations in Javascript, finding an efficient and elegant way to compute the set difference (A - B) is a common challenge. Let's explore some methods.Native Function

2024-10-21 comment 0 1047

How to use parallel streams for concurrent computation in Java?

Course Introduction：How to use parallel streams for concurrent computation in Java? Create parallel streams: Use the Stream.parallel() method. Perform operations: Use parallel streams to perform common operations such as mapping, aggregation, and filtering, applying them in parallel to each element. Parallel Computing: Parallel streams perform operations in parallel, improving performance, especially for large data sets.

2024-05-02 comment 0 1184

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