More examples.

Author: Smoren

README.md

@@ -38,6 +38,8 @@ $view['::-1']; // [9, 8, 7, 6, 5, 4, 3, 2, 1]
 
 $view[2]; // 3
 $view[4]; // 5
+$view[-1]; // 9
+$view[-2]; // 8
 
 $view['1:7:2'] = [22, 44, 66];
 print_r($view); // [1, 22, 3, 44, 5, 66, 7, 8, 9]

tests/unit/Examples/ExamplesTest.php

@@ -22,6 +22,8 @@ public function testSlicing()
 
         $this->assertSame(3, $originalView[2]);
         $this->assertSame(5, $originalView[4]);
+        $this->assertSame(9, $originalView[-1]);
+        $this->assertSame(8, $originalView[-2]);
 
         $originalView['1:7:2'] = [22, 44, 66];
         $this->assertSame([1, 22, 3, 44, 5, 66, 7, 8, 9], $originalArray);