usa – Visa extension due to covid pending – am I legally okay until I hear back from UCIS?

I filed and paid for extension of Visa with I-539 form before my original visa expired on May 6th 2020. I have not heard back from UCIS, should I worry? I dont want to travel while tests and vaccines are required, therefore prefer to stay as long as I can.

It says on UCIS homepage https://www.uscis.gov/about-us/uscis-response-to-covid-19
If You File in a Timely Manner. Nonimmigrants generally do not accrue unlawful presence while the timely-filed, non-frivolous EOS/COS application is pending. Where applicable, employment authorization with the same employer, subject to the same terms and conditions of the prior approval, is automatically extended for up to 240 days after I-94 expiration when an extension of stay request is filed on time.

real analysis – Superharmonic extension 3

This question is related to the MO post
Superharmonic extension 2. Let $u$ be a superharmonic function on $mathbb{R}^m$ ($m>2$) such that for some $alphainmathbb{R}$ and $beta$, $R>0$,
$$u(x)=alpha+beta |x|^{2-m}$$ for $|x|geq R$. Given any compact set $K$ in $mathbb{R}^m$ and any fixed point $y_0$ outside $K$, Mateusz Kwaśnicki transfered the singularity of $u$ from $infty$ to $y_0$ without changing the function on $K$; another words, he constructed a function $overline{u}$ that is superharmonic on $mathbb{R}^mcup{infty}$ outside $y_0$, and whose restriction to $K$ coincides with $u$.

My new question is: is it possible to do so, if $y_0$ is a given point in the interior of $K$, and not outside $K$?
Notice that the same construction will not work here, because Mateusz Kwaśnicki uses the Green’s function of $mathbb{R}^msetminus K$ with pole at $y_0$. So if $y_0$ is inside $K$, the Greens function will not be zero on $K$ anymore, and his $overline{u}$ will not be equal to $u$ on $K$.

magento2 – Magento 2.4.2 composer install PHP extension errors

I am trying to set up a local Magento 2.4.2 instance just to experiment and develop some work, but I keep hitting a problem with PHP extensions when I run composer create-project --repository-url=https://repo.magento.com/ magento/project-community-edition

Creating a "magento/project-community-edition" project at "./project-community-edition"
Installing magento/project-community-edition (2.4.2)
  - Installing magento/project-community-edition (2.4.2): Extracting archive
Created project in /home/rafael/Desktop/project-community-edition
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires magento/product-community-edition 2.4.2 -> satisfiable by magento/product-community-edition(2.4.2).
    - magento/product-community-edition 2.4.2 requires ext-curl * -> it is missing from your system. Install or enable PHP's curl extension.
  Problem 2
    - magento/magento2-functional-testing-framework(3.0.0, ..., 3.3.0) require ext-curl * -> it is missing from your system. Install or enable PHP's curl extension.
    - Root composer.json requires magento/magento2-functional-testing-framework ^3.0 -> satisfiable by magento/magento2-functional-testing-framework(3.0.0, ..., 3.3.0).

To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/7.4/cli/php.ini
    - /etc/php/7.4/cli/conf.d/10-opcache.ini
    - /etc/php/7.4/cli/conf.d/10-pdo.ini
    - /etc/php/7.4/cli/conf.d/15-xml.ini
    - /etc/php/7.4/cli/conf.d/20-calendar.ini
    - /etc/php/7.4/cli/conf.d/20-ctype.ini
    - /etc/php/7.4/cli/conf.d/20-dom.ini
    - /etc/php/7.4/cli/conf.d/20-exif.ini
    - /etc/php/7.4/cli/conf.d/20-ffi.ini
    - /etc/php/7.4/cli/conf.d/20-fileinfo.ini
    - /etc/php/7.4/cli/conf.d/20-ftp.ini
    - /etc/php/7.4/cli/conf.d/20-gettext.ini
    - /etc/php/7.4/cli/conf.d/20-iconv.ini
    - /etc/php/7.4/cli/conf.d/20-json.ini
    - /etc/php/7.4/cli/conf.d/20-mbstring.ini
    - /etc/php/7.4/cli/conf.d/20-phar.ini
    - /etc/php/7.4/cli/conf.d/20-posix.ini
    - /etc/php/7.4/cli/conf.d/20-readline.ini
    - /etc/php/7.4/cli/conf.d/20-shmop.ini
    - /etc/php/7.4/cli/conf.d/20-simplexml.ini
    - /etc/php/7.4/cli/conf.d/20-sockets.ini
    - /etc/php/7.4/cli/conf.d/20-sysvmsg.ini
    - /etc/php/7.4/cli/conf.d/20-sysvsem.ini
    - /etc/php/7.4/cli/conf.d/20-sysvshm.ini
    - /etc/php/7.4/cli/conf.d/20-tokenizer.ini
    - /etc/php/7.4/cli/conf.d/20-xmlreader.ini
    - /etc/php/7.4/cli/conf.d/20-xmlwriter.ini
    - /etc/php/7.4/cli/conf.d/20-xsl.ini
You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

I already tried to install the extensions with the following command:

sudo apt-get install php7.4-opcache php7.4-pdo php7.4-calendar php7.4-ctype php7.4-dom php7.4-exif php7.4-ffi php7.4-fileinfo php7.4-ftp php7.4-gettext php7.4-iconv php7.4-json php7.4-mbstring php7.4-phar php7.4-posix php7.4-readline php7.4-shmop php7.4-simplexml php7.4-sockets php7.4-sysvmsg php7.4-sysvsem php7.4-sysvshm php7.4-tokenizer php7.4-xmlreader php7.4-xmlwriter php7.4-xsl

PHP version:

PHP 7.4.3 (cli) (built: Oct  6 2020 15:47:56) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.3, Copyright (c), by Zend Technologies

Mysql version:

mysql  Ver 8.0.23-0ubuntu0.20.04.1 for Linux on x86_64 ((Ubuntu))

Elasticsearch version:

{
  "name" : "magecomp4",
  "cluster_name" : "magento-local-app-dummy",
  "cluster_uuid" : "keE77f1bQyudHuyvNVFWYQ",
  "version" : {
    "number" : "7.11.1",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "ff17057114c2199c9c1bbecc727003a907c0db7a",
    "build_date" : "2021-02-15T13:44:09.394032Z",
    "build_snapshot" : false,
    "lucene_version" : "8.7.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

Can anyone please help me?

Is there a need in Magento 2.4 for Cache warmer extension or Google Page Speed Optimizer?

Magento ver. 2.4.2
4 x 2.50 GHz Cores
8 GB RAM
5 TB Bandwidth
5000 Mbps Network Out

We used to run Magento 1.9.4 but are switching to Magento 2.4.2. Every time I installed Magento 2.x it always seemed very slow on the back-end (we haven’t set up the front end yet to see) even though I have done all the recommended optimisations.

Now I found 2 extensions created by Amasty:

  • Full Page Cache Warmer
  • Google Page Speed Optimizer

They are not the cheapest ones so I was wondering if this would help with Magento 2 or is Magento 2.x designed in such a way where this is no longer needed? Historically (on our Magento 1.9.4) we had a hard time with Caching extensions so we ended up disabling it (I guess we weren’t able to configure them properly).

What is the best way to install fb pixel in magento 2 ? Using script or with extension!

There is an official extension which does it

https://en-gb.facebook.com/business/help/532749253576163

Install the Facebook business extension through your Magento account to help you share online and offline events with Facebook. By sharing these events, you can see how users are interacting with your business. Then you can optimise the targeting and delivery of your Facebook ads to drive more business outcomes.

This tracking is done via a pixel

https://en-gb.facebook.com/business/help/742478679120153?id=1205376682832142

The Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising by understanding the actions people take on your website.

You can use the pixel to:

Make sure that your ads are shown to the right people. Find new customers, or people who have visited a specific page or taken a desired action on your website.

Drive more sales. Set up automatic bidding to reach people who are more likely to take an action that you care about, such as making a purchase.

Measure the results of your ads. Better understand the effect of your ads by measuring what happens when people see them.

However there is a lot of setup required. You need to understand how Facebook works in terms of business configuration.

regex – What is the correct syntax of a list involving regular expressions (non-typical usage in a browser extension)?

So, I’m struggling with configuring options in Aria2 Download Manager Integration extension for Firefox. In the ‘Include file type’ field I’m supposed to list a number of file types to be captured by aria2c downloader. There’s a hint below the option text-box suggesting to use ‘Regular Expressions: (that) Matches MIME type’. The extension only picks up one value at a time, e.g. application/octet (for archives and executables) or image/jpeg (for .jpg images). If I use image/*/, PNG-images get included as well – as if the wildcard is somehow recognized! I’ve tried several types of delimiters to keep the file types separate: backslashes, some common html and unix separators. The extension seems to ignore them. What am I missing here? Is the regular expressions syntax just more complicated so that placing correct delimiters in a list is not enough?