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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11382

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 17695

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 11394

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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Write a program in C language to print a pyramid pattern

Course Introduction：Program Description A pyramid is a polyhedron formed by connecting polygonal bases and points called vertices. Each base and vertex form a triangle called a side. It is a cone with a polygonal base. A pyramid with an n-sided base has n+1 vertices, n+1 faces, and 2n sides. All pyramids are self-dual. AlgorithmAcceptthenumberofrowsfromtheusertoformpyramidshapeIteratethelooptillthenumberofrowsspecifiedbytheuser:Display1starinthefirstrowIncreasethenumb

2023-09-06 comment 0 1755

How to quickly find the center of a circle and draw a circle in CorelDraw2019_How to quickly find the center of a circle and draw a circle in CorelDraw2019

Course Introduction：1. Double-click to start the CorelDRAW2019 software. 2. Quickly find the center of the circle in CorelDRAW2019. 3. Draw a standard circle, and 8 points will appear. Draw a cross-shaped reference line. When the intersection points coincide with the center of the circle, the word "center" will appear, which is the center of the circle. 4. Select the pen tool, click on the middle circle first, 4 points will appear, draw a cross-shaped guide line, and then drag the circle away. 5. Use Ctrl+Shift to draw a circle against the center point, move the mouse towards the four points, and release the left mouse button when the [Node] is displayed. This method is more reliable.

2024-06-01 comment 0 679

How to quickly find the center of a circle and draw a circle in CorelDraw2019 How to quickly find the center of a circle and draw a circle in CorelDraw2019

Course Introduction：The article brought to you today is about CorelDraw2019 software. How can you quickly find the center of a circle and draw a circle in CorelDraw2019? Below, the editor will bring you a method to quickly find the center of a circle and draw a circle in CorelDraw2019. Let us take a look below. How to quickly find the center of a circle and draw a circle in CorelDraw2019? How to quickly find the center of a circle and draw a circle in CorelDraw2019 1. Double-click to start the CorelDRAW2019 software. 2. Quickly find the center of the circle in CorelDRAW2019. 3. Draw a standard circle and 8 points will appear. Draw a cross-shaped reference line. When the intersection points coincide with the center of the circle, the word "center" will appear, which is

2024-08-08 comment 0 879

Implementation example of JavaScript printing star pyramid function

Course Introduction：This article mainly introduces JavaScript to realize the function of printing star pyramid, and analyzes the principle and related implementation techniques of JavaScript to output star pyramid graphics with any given number of rows based on specific examples. Friends in need can refer to the following

2017-09-28 comment 0 3147

JavaScript print star pyramid function

Course Introduction：This article mainly introduces JavaScript to realize the function of printing star pyramid. It analyzes the principle and related implementation techniques of JavaScript for outputting star pyramid graphics with any given number of rows based on specific examples. Friends in need can refer to it. I hope it can help everyone.

2018-01-30 comment 0 3464

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