diff --git a/index.html b/index.html
index a8ce3df..db3f53e 100644
--- a/index.html
+++ b/index.html
@@ -1759,17 +1759,20 @@
Exercise 14: Use concatMap() to retrieve id, title, and 150x200 box art url
// {"id": 70111470,"title": "Die Hard","boxart":"http://cdn-0.nflximg.com/images/2891/DieHard150.jpg" }
// ];
- return movieLists.concatMap(function(movieList) {
- return movieList.videos.concatMap(function(video) {
- return video.boxarts.
- filter(function(boxart) {
- return boxart.width === 150;
- }).
- map(function(boxart) {
- return {id: video.id, title: video.title, boxart: boxart.url};
- });
- });
- });
+ return movieLists.concatMap(movieList =>
+ movieList.videos.concatMap(video =>
+ video.boxarts.
+ filter(boxart => boxart.width === 150).
+ map(boxart =>
+ ({
+ 'id': video.id,
+ 'title': video.title,
+ 'boxart': boxart.url
+ })
+ )
+ )
+ );
+
}
It's a very common pattern to see several nested concatMap operations, with the last operation being a