Merge pull request basarat#278 from liukun/patch-1

Object destructuring to existing variables

Author: basarat

docs/destructuring.md

@@ -25,6 +25,10 @@ var rect = { x: 0, y: 10, width: 15, height: 20 };
 // Destructuring assignment
 var {x, y, width, height} = rect;
 console.log(x, y, width, height); // 0,10,15,20
+
+rect.x = 10;
+({x, y, width, height} = rect); // assign to existing variables using outer parentheses
+console.log(x, y, width, height); // 10,10,15,20
 ```
 Here in the absence of destructuring you would have to pick off `x,y,width,height` one by one from `rect`.