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Asynchronous communication framework Swoole practical course

Course Advanced 8981

Course Introduction：Swoole enables PHP developers to write high-performance and high-concurrency TCP, UDP, Unix Socket, HTTP, WebSocket and other services, making PHP no longer limited to the Web field. The maturity of Swoole4 coroutines has brought PHP into an unprecedented period, providing unique possibilities for performance improvement.

vscode is actually very simple

Course Elementary 18313

Course Introduction：vscode is a cross-platform source code editor for writing modern web and cloud applications that runs on Mac OS X, Windows and Linux. It runs on the desktop and is available for Windows, macOS and Linux. It has built-in support for JavaScript, TypeScript, and Node.js, and a rich ecosystem of extensions for other languages (such as C++, C#, Java, Python, PHP, Go) and runtimes (such as .NET and Unity).

Getting started with Ajax asynchronous request technology from scratch

Course Elementary 6022

Course Introduction：An asynchronous request means that after the client sends a request message, it does not wait for the server's response and continues to perform other operations. Web applications using Ajax technology can quickly present incremental updates to the user interface without the need to reload (refresh) the entire page, which allows the program to respond to user operations faster.

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vim - jump to first word on line (non-space)

In normal mode, enter shift+^6 to move to the first non-space. If you are in insert mode, I don't want to switch to normal mode first. What input can I use to jump directly to the first word of the line (non-space)? place)? The home button doesn't work, no, if the line header is a space, my intention is not...

2017-06-16 09:19:27

Does HTML5 allow non-empty self-closing tags?

The W3C validator (Wikipedia) does not like the use of self-closing tags (tags ending in "/>") on non-empty elements. (Empty elements are those that never contain any content.) Are they still valid in HTML5? Some examples of accepted empty elements:<br/><imgsrc=""/><inputtype="text&qu

2023-08-21 18:20:11

How to group MySQL rows using a combination of non-null values

How to merge/combine rows by selecting the latest non-null value of each column in the grouped result? id user fruit number creation time 1 Jane apple empty 2022-01-012 John watermelon 322022-01-023 John empty 722022-01-034 John pear empty 2022-01-04 The following method does not work: SELECTuser,COALESCE(fruit)asfruit ,COALESCE(number)asnumber,FROMmytableGROUPBYuserORDERBYc

2023-09-06 21:35:03

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How to deal with the requirement of non-empty table creation in phpmyadmin

Course Introduction：Create non-null fields in PHPMyAdmin: Check the "NOT NULL" checkbox when creating the table. When inserting data, non-null fields do not allow null values to be inserted. A non-null field can be changed to nullable by unchecking the "NOT NULL" checkbox. An empty string can be inserted by entering two single quotes.

2024-04-07 comment 0 1053

How to determine if el expression is not empty

Course Introduction：This time I will show you how to determine whether el expression is not empty, and what are the precautions for determining whether el expression is not empty. The following is a practical case, let's take a look.

2018-05-08 comment 0 3102

How to express non-null in mysql

Course Introduction：There are two ways to express non-null in MySQL: use NOT NULL constraint to prohibit fields from having null values. Use the DEFAULT value to specify a default value for fields that are not explicitly specified.

2024-04-27 comment 0 389

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