The method \Magento\Eav\Model\ResourceModel\Helper::getLoadAttributesSelectGroups() can be sped up and simplified

[dmitrii-fediuk]

magento2/app/code/Magento/Eav/Model/ResourceModel/Helper.php

Lines 77 to 84 in 0be91a5

	public function getLoadAttributesSelectGroups($selects)
	{
	$mainGroup = [];
	foreach ($selects as $selectGroup) {
	$mainGroup = array_merge($mainGroup, $selectGroup);
	}
	return [$mainGroup];
	}

Can be simplified to array_values(array_merge($selects))
It is not only simplier but much faster too.

[davidalger]

@dfediuk Thanks for the feedback. Would you mind submitting this as a PR so it may be further processed?

[davidalger]

Closing due to lack of response