MariaDB reset table index value?

I was wondering what to do when for example your table is reaching it’s maximum index values, I was using this Query to determine the index usage per table:

  IF (c.MAX_VALUE > 0, ROUND(100 * t.AUTO_INCREMENT / c.MAX_VALUE, 2), -1) AS "Usage (%)" 
        WHEN COLUMN_TYPE LIKE 'tinyint(1)' THEN 127
        WHEN COLUMN_TYPE LIKE 'tinyint(1) unsigned' THEN 255
        WHEN COLUMN_TYPE LIKE 'smallint(%)' THEN 32767
        WHEN COLUMN_TYPE LIKE 'smallint(%) unsigned' THEN 65535
        WHEN COLUMN_TYPE LIKE 'mediumint(%)' THEN 8388607
        WHEN COLUMN_TYPE LIKE 'mediumint(%) unsigned' THEN 16777215
        WHEN COLUMN_TYPE LIKE 'int(%)' THEN 2147483647
        WHEN COLUMN_TYPE LIKE 'int(%) unsigned' THEN 4294967295
        WHEN COLUMN_TYPE LIKE 'bigint(%)' THEN 9223372036854775807
        WHEN COLUMN_TYPE LIKE 'bigint(%) unsigned' THEN 0
        ELSE 0
     WHERE EXTRA LIKE '%auto_increment%'
   ) c


 c.TABLE_SCHEMA = 'Database_Name'
 `Usage (%)` DESC;

Which would return something like this:

| TABLE_NAME             | COLUMN_TYPE | MAX_VALUE  | AUTO_INCREMENT | Usage (%) |
| app_crontasks          | int(11)     | 2147483647 |        1536304 |      0.07 |
| app_alerts             | int(11)     | 2147483647 |              1 |      0.00 |
| app_apiclients         | int(11)     | 2147483647 |              2 |      0.00 |
| app_replicates         | int(11)     | 2147483647 |              1 |      0.00 |
| ...                    | ...         | ...        | ...            | ...       |

In case it fills up to, for example, 75% then we would need to do a clean up of the database? How am I able to safely do that? Would it affect the foreign keys assigned?

transactions – How to exchange small amount of bitcoin?

The best and optimal method would be to avoid exchange since they will take their fees plus the fees taken by the miners that you gonna have to pay to send the coins to them on the blockchain, and also you gonna have to give them your personal information (KYC Know Your Costumer)

Exchanges are still the most simple, I suggest Coinbase who only require 2 euro of minimum deposit.

If you want a cheaper, savy way, more optimal and more bitcoin way of trading your bitcoin you could try local bitcoin which allow you to met other person willing to trade bitcoin in real life, or Bisq which is a decentralized exchange software.

calculus and analysis – question on correct use of Limit for multivariable function

V 12.1 on windows.

This limit $lim_{(x rightarrow 0,yrightarrow 0)} frac{x^2-y^2}{x^2+y^2}$ depends on the direction. So the limit does not exist, or could be written as Maple does it, which is $-1dots1$, here is the help from Maple on this:

enter image description here

How can one get Mathematica to give this result? Now Mathematica says the limit is $1$. I tried the Direction option but not able to make it change its mind.

f = (x^2 - y^2)/(x^2 + y^2);
Limit(f, {x -> 0, y -> 0})
(* 1 *)

But we see the limit depends on the direction

 Limit(Limit(f, x -> 0), y -> 0)
 (* -1 *)

 Limit(Limit(f, y -> 0), x -> 0)
 (*  1 *)

Here is also Maple to confirm

limit(f, (x=0,y=0));

enter image description here

Btw, this is not the only one I found, here is another

f = (x^2*y^2)/(x^4 + y^4);
Limit(f, {x -> 0, y -> 0})
(* 0 *)

Maple gives

  (* 0 .. 1/2 *)

And another one (this one is from youtube actually, so you can see they also say there the limit does not exist)

f = (x^4 - 4 y^2)/(x^2 + 2 y^2);
Limit(f, {x -> 0, y -> 0})
(* 0 *)

limit(f, (x=0,y=0));
(* -2 .. 0 *)

So I have feeling I am not using Limit in Mathematica correctly, or missing something about its correct use, but do not now know how to correct it. As I said, I tried different Direction option.

world of darkness – Do “editions” of White Wolf products correspond?

White Wolf has published a variety of product lines. Each product line has multiple editions. Do the editions of various games line up intuitively?

For example, I have a smattering of books from both Werewolf: The Apocalypse and Wraith: The Oblivion. Both games have a first edition, second edition, and 20th anniversary edition (Werewolf additionally has a Revised edition that does not seem to correspond to anything in Wraith).

In other games with which I’m familiar the editions would line up nicely. For example, in Dungeons and Dragons there are Ravenloft books for 2nd edition D&D and 5th edition D&D. There are also Planescape books for 2nd edition. The Planescape 2e and Ravonloft 2e books are in some sense “related” because they refer to the same rule set.

Is this true for White Wolf products? I’m confused because the periods in which they are published don’t overlap. Werewolf 1e was published between 1992 – 1993, while Wraith 1e was published in 1994 – 1995. Second edition Werewolf started in 1994, but second edition Wraith started in 1996.

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[ Politics ] Open Question : Do you morons know jews want a race war?

the mayor of Minneapolis is jewish! jews control banks, media and politics! they want to pit whites and blacks against each other and all the other races.

dnd 5e – How do I calculate d20 success probability using the Halfling ‘lucky’ trait with (dis)advantage?

Here is a comprehensive DPR calculator, and here is the mathematics behind it. I’m trying to follow along with the equations.

At the bottom of the second page are formulas for success probability $L$ of a Halfling (who has luck) in normal circumstances and with advantage and disadvantage: $$L = P + frac{1}{20}P,$$ $$L_{adv} = P_{adv} + left(frac{2}{20}(1 – P) – frac{1}{400}right)P,$$ $$L_{dis} = P_{dis} + frac{2}{20}P^2,$$ where:

  • $P$ is the probability of succeeding on any single roll,
  • $P_{adv} = 1 – (1 – P)^2$ is the probability of succeeding with advantage (not failing both rolls), and
  • $P_{dis} = P^2$ is the probability of succeeding with disadvantage (succeeding both rolls).

The $P$s are quite easy to derive, and $L$ is just passing outright OR (rolling a 1 AND THEN passing the reroll): $$L = P + left(frac{1}{20}*Pright).$$ But I’m struggling with deriving $L_{adv}$ and $L_{dis}$. Please can someone show a derivation?

Error 2002F during internet recovery on Mac Mini over WIFI

I want to roll back to the oldest MacOS version on a Mac Mini.

It displays error 2002F after connecting to the Internet over WIFI during Internet Recovery.

During normal OS operation the Mac has no problems connecting to the Internet over WIFI.

I don’t have an ethernet cable.

Help appreciated.

magento2 load image when edit

I have data in the table. But when I click the edit button, the data of the image has not been loaded yet
. This is my code


namespace MageplazaHelloWorldModelPost;

use MageplazaHelloWorldModelResourceModelPostCollectionFactory;
use MagentoFrameworkAppRequestDataPersistorInterface;
use MagentoFrameworkAppObjectManager;
use MageplazaHelloWorldModelPostFileInfo;
use MagentoFrameworkFilesystem;

 * Class DataProvider
class DataProvider extends MagentoUiDataProviderAbstractDataProvider

 * @var MagentoCmsModelResourceModelBlockCollection
protected $collection;

 * @var DataPersistorInterface
protected $dataPersistor;
public $_storeManager;

 * @var array
protected $loadedData;

 * Constructor
 * @param string $name
 * @param string $primaryFieldName
 * @param string $requestFieldName
 * @param CollectionFactory $blockCollectionFactory
 * @param DataPersistorInterface $dataPersistor
 * @param array $meta
 * @param array $data

* @var Filesystem
private $fileInfo;

public function __construct(
$name, $primaryFieldName, $requestFieldName, CollectionFactory $blockCollectionFactory, DataPersistorInterface $dataPersistor, MagentoStoreModelStoreManagerInterface $storeManager, array $meta = (), array $data = ()
) {
    $this->collection = $blockCollectionFactory->create();
    $this->_storeManager = $storeManager;
    $this->dataPersistor = $dataPersistor;
    parent::__construct($name, $primaryFieldName, $requestFieldName, $meta, $data);

 * Get data
 * @return array
public function getData() {
    if (isset($this->loadedData)) {
        return $this->loadedData;
    $items = $this->collection->getItems();
    /** @var MagentoCmsModelBlock $block */
    foreach ($items as $block) {
        $block = $this->convertValues($block);
        $this->loadedData($block->getId()) = $block->getData();
        $temp = $block->getData();

    $data = $this->dataPersistor->get('postdata');

    if (!empty($data)) {
        $block = $this->collection->getNewEmptyItem();

        $this->loadedData($block->getId()) = $block->getData();


    return $this->loadedData;


private function convertValues($block)
    $fileName = $block->getFeaturedImage();

    $image = ();
    if ($this->getFileInfo()->isExist($fileName)) {
        $stat = $this->getFileInfo()->getStat($fileName);
        $mime = $this->getFileInfo()->getMimeType($fileName);
        $image(0)('name') = $fileName;
        $image(0)('url') = $block->getImageUrl();
        $image(0)('size') = isset($stat) ? $stat('size') : 0;
        $image(0)('type') = $mime;

    return $block;

 * Get FileInfo instance
 * @return FileInfo
 * @deprecated 101.1.0
private function getFileInfo()
    if ($this->fileInfo === null) {
        $this->fileInfo = ObjectManager::getInstance()->get(FileInfo::class);
    return $this->fileInfo;


enter image description here

enter image description here

I Think error if() in function convertValues

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