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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.

More courses

How to check if an array contains a value in JavaScript?

What is the cleanest and most efficient way to find out if a JavaScript array contains a value? This is the only way I know: functioncontains(a,obj){for(vari=0;i<a.length;i++){if(a[i]===obj){returntrue;}}returnfalse;} there Isn't there a better, cleaner way to achieve this? This is most similar to the StackOverflow question Find items in JavaScript array

2023-08-23 11:09:10

How to use variables in regular expressions?

I want to create a String.replaceAll() method in JavaScript and I think using regular expressions is the cleanest way. However, I don't know how to pass variables to the regular expression. I can already do this, replacing all instances of "B" with "A". "ABABAB".replace(/B/g,"A");But I want to do something like this: String.prototype.

2023-08-23 15:12:16

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

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How to uninstall 2345 Browser in the cleanest way. Tutorial on completely deleting 2345 Browser.

Course Introduction：What is the cleanest way to uninstall 2345 browser? The 2345 browser can help users search for various resources, but many users also ask how to uninstall the 2345 browser on their computers? Let the editor introduce several specific methods to users. What is the cleanest way to uninstall 2345 browser? Method 1 1. First find the installation location of the 2345 browser. You can find it by right-clicking the 2345 browser icon and selecting Open File Installation Location. 2. Then find the Uninstall.exe application among many files, double-click it to open it and uninstall it. Method 2: 1. Open 360 Security Guard, and in the function options at the top, open the software manager. 2. After opening the software manager, uninstall it

2024-09-02 comment 0 581

Detailed tutorial on how to clean the C drive to its cleanest state

Course Introduction：We all know that if the computer system disk (usually the C drive) is full, it will cause the computer to freeze. In severe cases, it may even cause the computer to be unable to start. So what are the cleaning methods? Today, the editor has compiled a detailed tutorial for you on how to clean the C drive to the cleanest possible state. If you need it, please come and take a look. 1. Right-click on the C drive of your computer and select "Properties". 2. In the properties menu that pops up, select "General" and click "Disk Cleanup". 3. Wait for Disk Cleanup to calculate garbage. 4. Select the garbage that needs to be cleaned and click OK. The above is the editor's tutorial on how to clean the C drive to the cleanest state using win10 system. The operation of win7 is also almost the same. If your computer is also stuck, you might as well try to clean up c

2023-07-19 comment 0 4144

How to delete files downloaded from Baidu Netdisk cleanly How to delete files downloaded from Baidu Netdisk in the cleanest way

Course Introduction：When we use Baidu Cloud Disk to download files, we will need to delete the downloaded files. However, many users are asking how to delete the files downloaded from Baidu Cloud Disk? Let this site introduce to users in detail how to delete files downloaded from Baidu Netdisk in the cleanest way. How to delete files downloaded from Baidu Netdisk in the cleanest way? 1. First, open the network disk on your computer and click on the Recycle Bin. 2. Then click the deleted file on the Recycle Bin page. 3. Then the option appears, click Delete completely. 4. Finally, a dialog box appears. Click OK to completely delete the files on the network disk.

2024-08-26 comment 0 651

How to uninstall the 2345 browser in the cleanest way. Tutorial on how to uninstall the 2345 browser cleanly.

Course Introduction：2345 Browser is a software that many people download and use. However, this application has a shortcoming, that is, there are many advertisements. Many users choose to uninstall it and no longer use it. So, how to uninstall 2345 Browser in the cleanest way? Many people are not very clear about this issue, so in this software tutorial, we will share the detailed operation steps, let’s learn about it together. How to uninstall the 2345 browser? The cleanest operation method one: 1. Click the Control Panel option on the computer desktop. 2. After clicking to enter the control panel, click to enter the program page. 3. After entering the program page, click the Uninstall program option. 4. After entering the uninstaller page, select 2345 Browser and click Uninstall to completely uninstall 2345 Browser. Operation method two: Make sure the computer

2024-08-29 comment 0 470

Which company is the cleanest for reinstalling the system?

Course Introduction：Generally speaking, reinstalled systems will come with some bundled downloads, allowing you to download several software after downloading the system. The ones introduced below are all very pure and do not contain any other software. Which company is the cleanest for reinstalling the system: 1. Win11 comes with one-click reinstallation. Win11 comes with one-click reinstallation. It is a very easy-to-use system with excellent performance. Apart from the basic system, other downloads are not provided. Very pure. 2. Win7 reinstallation system Win7 reinstallation system is a super convenient, easy to use and fast reinstallation system. It has a large number of functions and many good system operations that we can use. 3. Win10 comes with a reinstallation system. Win10 comes with a reinstallation system. It is a super easy-to-use original system.

2024-01-24 comment 0 2763

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