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Winson (32) [Avatar] Offline
Here is my code try to achieve this requirement:

__.difference(__.allKeys(bobFavorites),req.access_token.scope).forEach( function(item) {
if (bobFavorites[item])
delete bobFavorites[item];

Any comment is welcome!
Antonio Sanso (11) [Avatar] Offline
Thanks Winson for the comment.
Would you like us to cover this in the book as well? smilie
Winson (32) [Avatar] Offline
Sure. Thanks
Justin Richer (58) [Avatar] Offline
Right now this is left as an exercise to the reader, which I think is appropriate. Nice work!