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Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

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General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules

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/**
 * Returns true if specified object has no properties,
 * false otherwise.
 *
 * @param {object} object
 * @returns {boolean}
 */
function isObjectEmpty(object)
{
    if ('object' !== typeof object) {

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<?php
/**
 * ACF Rule: adds Post Language type
 *
 * @author @theMikeD
 *
 * @param array $choices, all of the available rule types
 * @return array
 */
function cnmd_acf_rule_type_language( $choices ) {

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<?php
if (empty($parent)) {$parent = $modx->resource->id;}
$pids = array_merge(array($parent), $modx->getChildIds($parent));
$ids = array();

$q = $modx->newQuery('msProduct');
$q->where(array('class_key' => 'msProduct','parent:IN' => $pids,'published' => 1,'deleted' => 0));
$q->select('`msProduct`.`id`');
if ($q->prepare() && $q->stmt->execute()) {
    $ids = $q->stmt->fetchAll(PDO::FETCH_COLUMN);

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// 🔥 Node 7.6 has async/await! Here is a quick run down on how async/await works

const axios = require('axios'); // promised based requests - like fetch()

function getCoffee() {
  return new Promise(resolve => {
    setTimeout(() => resolve('☕'), 2000); // it takes 2 seconds to make coffee
  });
}

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Collections.renderer.imageplus = function(value, metaData, record, rowIndex, colIndex, store) {
    if (value != '' && value != null) {
        var data = Ext.decode(value);
        var url = MODx.config.connectors_url + 'system/phpthumb.php?imageplus=1';
        
        var params = {};
        params.src = MODx.config['collections.renderer_image_path'] + data.sourceImg.src;
        params.w = 100;
        if (data.sourceImg.src.indexOf('.png') !== -1) {
            params.f = 'png';

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# MODX htaccess for BABEL (idealab settings)

RewriteEngine On
RewriteBase /

php_flag display_startup_errors on
php_flag display_errors on
php_flag html_errors on

# redirect all requests to /de/favicon.ico and /nl/favicon.ico