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Self-study IT network Linux load balancing video tutorial

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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

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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

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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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What is a vector image?

Course Introduction：What does vector graphics mean? A vector image is an image described using geometric figures, which are represented by mathematical formulas rather than a collection of pixels. In computer graphics, vector graphics are widely used in graphic design, CAD, map production, chart drawing and other fields. In contrast, bitmap images are composed of pixels, and the number of pixels determines the resolution of the image. Unlike bitmap images, vector images use geometric shapes such as line segments, curves, and points to describe images. Due to the use of mathematical formulas, vector images can be enlarged infinitely without distortion; while bitmap images

2024-02-18 comment 0 1434

How to highlight key points in PPT data chart page

Course Introduction：1. This lesson explains how to highlight the key points of the table. 2. [Xiaomi Case Study 1], as shown in the figure. 3. [Xiaomi Case Study 2], as shown in the figure. 4. [Xiaomi Case Study 3], as shown in the figure. 5. Commonly used methods of contrasting to highlight key points: [size] [color] [thickness], as shown in the picture. 6. The hand-painted materials are in the material package. 7. The first method: select the [Part] to be highlighted, change the [Color] and [Size], as shown in the picture ([Ctrl+shift+C] [Ctrl+shift+V] is to copy and paste [Text Format]) . 8. The second method: use [Hand-drawn material], change it to [Solid Color Fill], [Color] to [Red], modify its [Size], as shown in the picture. 9. [Hover the mouse over

2024-03-20 comment 0 433

There are several preview methods in CorelDRAW. Introduction to previewer image types

Course Introduction：As an excellent vector drawing software, CorelDRAW has rich drawing functions and convenient and fast drawing tools, and is deeply loved by designers. Before, we talked about how to set up previews so that users can find the materials they need faster and more conveniently. Today I will introduce to you the types of preview views so that you can make better choices! The specific types are as follows: Wireframe view: This mode displays graphic outlines without color details. Quickly preview the basic elements of a drawing. 2. Normal view: PostScript fills or high-resolution bitmaps are not displayed when displaying graphics, so this mode opens and refreshes faster than "Enhanced" mode 3. Enhanced view: Outline shapes and text are displayed softer

2024-02-10 comment 0 718

What are the drawing software?

Course Introduction：Drawing software includes: 1. Adobe Photoshop, which is an image processing software that mainly processes digital images composed of pixels; 2. Adobe Illustrator, which is an industry-standard vector illustration software used in publishing, multimedia and online images; 3. CorelDRAW, which introduces full-color vector illustration and layout design programs; 4. Origin, a scientific drawing and data analysis software that supports a variety of 2D/3D graphics; 5. Painter, a natural-like painting software.

2022-07-29 comment 0 104768

How to create silhouette text in CorelDRAW Production method tutorial

Course Introduction：CorelDRAW is a very easy-to-use picture design software. It has many powerful functions that can help users design a variety of beautiful and creative pictures and text. Today, let us take a look at how to create silhouette text. Most of these text effects are made with silhouettes of small animals or plants, so we need to prepare this type of vector material. Let’s take a look at the details! The specific operations are as follows: 1. Open the CorelDRAW software and substitute the vector material. If it is not a vector image, click [Tracing Bitmap] to convert it. 2. Use the [Pen Tool] to circle the part where you want to replace the text. 3. Select the silhouette material and the drawn curve. , click Intersect, extract the tail and click Simplify to remove the tail from the original material. 4. Input

2024-02-09 comment 0 1231

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