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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11343

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 17647

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 11354

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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How to implement image cropping function in JavaScript?

Course Introduction：How to implement image cropping function in JavaScript? With the rapid development of mobile Internet, image cropping functions have become more and more common in many websites and mobile applications. As a front-end development language, JavaScript provides many libraries and technologies to implement image cropping functions. This article will introduce how to use JavaScript to implement the image cropping function and provide specific code examples. 1. HTML structure design First, we need to create a container in the page to display pictures and cropping boxes

2023-10-18 comment 0 1942

angularJS+Ionic implements mobile image upload function

Course Introduction：This time, I will bring you angularJS+Ionic to implement the mobile image upload function. What are the precautions for angularJS+Ionic to implement the mobile image upload function. The following is a practical case, let's take a look.

2018-04-17 comment 0 1684

How to crop with CorelDraw How to crop with CorelDraw

Course Introduction：Many small and medium-sized enterprises are using CorelDraw software, so do you know how to crop with CorelDraw? Next, the editor will bring you the CorelDraw cutting operation method. Interested users can take a look below. How to crop in CorelDraw? How to do cropping with CorelDraw: Open CorelDRAW and determine the elements to be cropped. In this example, you need to partially crop the rectangular frame, as shown in the figure below. Press and hold the left button on the "Crop" tool, and select the "Crop" command in the list, as shown in the figure below. If the default is crop, you can also click and select directly. Drag the mouse to outline the rectangular frame and crop the remaining parts, as shown in the figure below

2024-08-12 comment 0 671

UniApp's tips for implementing picture cropping and filter effects

Course Introduction：UniApp's implementation skills for image cropping and filter effects Introduction: In mobile application development, image processing is a common requirement, including image cropping and the implementation of filter effects. UniApp, as a cross-platform development framework based on Vue.js, can easily implement these functions on multiple platforms. This article will introduce how to implement image cropping and filter effects in UniApp, and provide code examples. 1. The implementation of image cropping uses the uni-app plug-in. Uni-app officially provides an image

2023-07-04 comment 0 2464

Java development skills revealed: implementing image compression and cropping functions

Course Introduction：Java is a programming language widely used in the field of software development. Its rich libraries and powerful functions can be used to develop various applications. Image compression and cropping are common requirements in web and mobile application development. In this article, we will reveal some Java development techniques to help developers implement image compression and cropping functions. First, let's discuss the implementation of image compression. In web applications, pictures often need to be transmitted over the network. If the image is too large, it will take longer to load and use more bandwidth. therefore, we

2023-11-20 comment 0 786

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