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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

Course Advanced 11334

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 are the canvas special effects?

Course Introduction：Canvas special effects include particle effects, line animation, image processing, text animation, audio visualization, 3D effects, game development, etc. Detailed introduction: 1. Particle effect, by controlling the position, speed and color of particles to achieve various effects, such as fireworks, raindrops, starry sky, etc.; 2. Line animation, by drawing continuous lines on the canvas, create various effects. A dynamic line effect; 3. Picture processing, by processing pictures, you can achieve various cool effects, such as picture switching, picture special effects, etc.; 4. Text animation and other features.

2023-08-18 comment 0 1463

Example tutorial HTML5 Canvas super cool fireworks bloom animation implementation code_html5 tutorial skills

Course Introduction：This is a cool HTML5 Canvas animation. It will simulate the animation special effects of fireworks blooming in our real life. The effect is very realistic. Let's briefly analyze the process and code of implementing this HTML5 fireworks special effect. It is mainly composed of HTML code. , CSS code and Javascript code, of course the javascript code is the most important

2016-05-16 comment 0 3168

Canvas Technology Overview

Course Introduction：Overview of Canvas technology introduction Canvas is a new feature in HTML5. It is a canvas element that can be used to draw graphics, animations, games, etc. Compared with using images or Flash to achieve the same effect, Canvas has higher performance and consumes less resources. Basic Usage The Canvas element is transparent by default, and its width and height can be specified by setting CSS styles or dynamically using JavaScript. Then, use getConte

2024-02-18 comment 0 1074

A Tsinghua-based start-up company released the world's first 4D skeletal animation framework, which can convert real scenes into animations with one click and can generate personalized characters.

Course Introduction：Apple recently announced that it will launch its first virtual head-mounted display device, VisionPro, on February 2. This XR device is expected to lead the rapid development of the next generation of terminals. With the popularization of virtual display devices, digital interaction will move from two-dimensional to three-dimensional, and three-dimensional models and three-dimensional animation will become the mainstream content forms in the future. Multi-dimensional immersive interaction will also become a trend under the trend of virtual and real integration. However, from the perspective of data scale, the data accumulation in the content industry at this stage is still mainly based on 2D images and flat videos, while the data foundation of 3D models, 4D animations and other data is relatively weak. Among them, 4D animation introduces time sequences on the basis of traditional 3D models, that is, 3D models that change over time, which can present dynamic three-dimensional effects. It has a wide range of applications in the fields of game animation, movie special effects, virtual reality, etc.

2024-01-19 comment 0 954

Can the HTML5 Canvas element be created through the Canvas constructor?

Course Introduction：In this article, we will perform how to create HTML5 canvas element from canvas constructor. We can achieve this task by using elements in HTML. Before diving into the examples, let’s first understand the definition and usage of elements in HTML. CanvasApi can be used to draw graphics via javascript and html elements. It can be applied to animation, game graphics, data visualization, photo editing, real-time video processing, etc. Much of the CanvasAPI's focus is on 2D visual effects. WebGLAPI renders hardware-accelerated 2D and 3D visual effects using elements. Let us see the following example to better understand canvas constructor using getElem

2023-09-06 comment 0 1264

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