fixed: select issue when first or get parameter given empty array

Author: nahid

src/JsonBuilderEngine.php

@@ -4,7 +4,7 @@
 
 use Nahid\QArray\QueryEngine;
 
-class JsonBuilder extends QueryEngine
+class JsonBuilderEngine extends QueryEngine
 {
     public function readPath($file)
     {

src/Queriable.php

@@ -236,7 +236,6 @@ public function takeColumn($array)
     protected function selectColumn($array)
     {
         $keys = $this->_select;
-
         if (count($keys) == 0) {
             return $array;
         }

src/QueryEngine.php

@@ -235,7 +235,10 @@ public function except()
      */
     public function get($column = [])
     {
-        $this->_select = $column;
+        if (count($column) > 0) {
+            $this->_select = $column;
+        }
+
         $this->prepare();
 
         return $this->prepareResult($this->_map);
@@ -492,7 +495,9 @@ public function first($column = [])
         $this->prepare();
 
         $data = $this->_map;
-        $this->_select = $column;
+        if (count($column) > 0) {
+            $this->_select = $column;
+        }
 
         if (count($data) > 0) {
             return $this->prepareResult(reset($data));