Merge remote-tracking branch 'mainline/2.2-develop' into MAGETWO-92402

Author: duhon

app/code/Magento/Analytics/ReportXml/ReportProvider.php

@@ -57,7 +57,7 @@ public function __construct(
     private function getIteratorName(Query $query)
     {
         $config = $query->getConfig();
-        return isset($config['iterator']) ? $config['iterator'] : null;
+        return $config['iterator'] ?? null;
     }
 
     /**

app/code/Magento/Backend/App/DefaultPath.php

@@ -42,6 +42,6 @@ public function __construct(\Magento\Backend\App\ConfigInterface $config)
      */
     public function getPart($code)
     {
-        return isset($this->_parts[$code]) ? $this->_parts[$code] : null;
+        return $this->_parts[$code] ?? null;
     }
 }

app/code/Magento/Backend/Block/Dashboard/Bar.php

@@ -38,14 +38,6 @@ public function getTotals()
      */
     public function addTotal($label, $value, $isQuantity = false)
     {
-        /*if (!$isQuantity) {
-          $value = $this->format($value);
-          $decimals = substr($value, -2);
-          $value = substr($value, 0, -2);
-          } else {
-          $value = ($value != '')?$value:0;
-          $decimals = '';
-          }*/
         if (!$isQuantity) {
             $value = $this->format($value);
         }

app/code/Magento/Backend/Model/Menu/Builder.php

@@ -102,6 +102,6 @@ public function getResult(\Magento\Backend\Model\Menu $menu)
      */
     protected function _getParam($params, $paramName, $defaultValue = null)
     {
-        return isset($params[$paramName]) ? $params[$paramName] : $defaultValue;
+        return $params[$paramName] ?? $defaultValue;
     }
 }

app/code/Magento/Backup/Helper/Data.php

@@ -110,7 +110,7 @@ public function getBackupsDir()
     public function getExtensionByType($type)
     {
         $extensions = $this->getExtensions();
-        return isset($extensions[$type]) ? $extensions[$type] : '';
+        return $extensions[$type] ?? '';
     }
 
     /**