shelane

.parent { display: grid; }
.child { grid-area: 1/1; }

Instead of:

.parent { position: relative }
.child { position: absolute; top: 0; left: 0; width: 100%; height: 100% }

shelane

<?php

namespace Drupal\custom_module\Controller;

use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\Core\Pager\PagerManagerInterface;

class ListNonDrupalItems extends ControllerBase {

shelane

<?php

// This is leading zeros:

$n = 10; // The desired end number

$numbers = range(1, $n);
$numbersWithLeadingZeros = array_map(function ($number) {
    return sprintf('%02d', $number);
}, $numbers);

shelane

<?php

// This should replace the DisplayPracticeTimes function.

$startTime = strtotime('08:00');
$endTime = strtotime('21:00');
$increment = 30 * 60; // 30 minutes in seconds

$times = array();

shelane

<?php
// Load a Node
use Drupal\node\Entity\Node;

$node = Node::load($nid);

// Load Multiple Nodes
use Drupal\node\Entity\Node;

$nodes = Node::loadMultiple($nids);

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<?php

/**
 * @file
 * Contains various helper functions.
 */

use Drupal\taxonomy\Entity\Term;

/**

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<?php

/**
 * @file
 * Token related hook implementations.
 */

use Drupal\Core\Render\BubbleableMetadata;

/**

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Including a link:
$link = Link::fromTextAndUrl($this->t('Bootstrap Documentation'), Url::fromUri('https://getbootstrap.com/docs/3.4/css/#grid-example-mixed-complete', ['attributes' => ['target' => '_blank']]))->toString();
    
'#description' => $this->t('When this option is selected, clearfix divs will be used to "clear" the columns as needed per device size (see %bootstrap_docs). Please note this option applies only when "Single row" is selected for the "Number of columns per view row" option.',
        ['%bootstrap_docs' => $link]),

The most common placeholder is probably @variable. This placeholder runs static::placeholderEscape() on the text before replacing it.

You may also use %variable, which runs placeholderEscape() on the text similar to @ placeholders. Using this placeholder will also create <em> tags around the placeholder values.

shelane

<?php

namespace Drupal\my_module\Services;

use Drupal\Core\Config\ConfigFactory;

/**
 * Class MyService.
 *
 * @package Drupal\my_module\Services

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<?php

// Autoload Url and Link classes.
use Drupal\Core\Url;
use Drupal\Core\Link;

/**
 * External link
 */
$url = Url::fromUri('https://colorfield.be');