Minor improvements

Author: aimeos

src/Map.php

@@ -3631,6 +3631,8 @@ public function pos( $value ) : ?int
 
 				++$pos;
 			}
+
+			return null;
 		}
 
 		if( ( $key = array_search( $value, $list, true ) ) !== false
@@ -4265,7 +4267,7 @@ public function shuffled( bool $assoc = false ) : self
 	 */
 	public function skip( $offset ) : self
 	{
-		if( is_scalar( $offset ) ) {
+		if( is_numeric( $offset ) ) {
 			return new static( array_slice( $this->list(), (int) $offset, null, true ) );
 		}
 
@@ -5168,7 +5170,7 @@ public function take( int $size, $offset = 0 ) : self
 	{
 		$list = $this->list();
 
-		if( is_scalar( $offset ) ) {
+		if( is_numeric( $offset ) ) {
 			return new static( array_slice( $list, (int) $offset, $size, true ) );
 		}
 

tests/MapTest.php

@@ -2929,7 +2929,7 @@ public function testSkip()
 	}
 
 
-	public function testSkipFunction()
+	public function testSkipClosure()
 	{
 		$fcn = function( $item, $key ) {
 			return $item < 4;
@@ -3383,7 +3383,7 @@ public function testTakeNegativeOffset()
 	}
 
 
-	public function testTakeFunction()
+	public function testTakeClosure()
 	{
 		$fcn = function( $item, $key ) {
 			return $item < 2;