Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
true ? true : false;
false ? true : false;
:)
Cool that it passes the case of ending being ''
I like how you used - to slice it, I almost never use - to slice anything.
But since and empty array may be passed as an argument, this becomes mandatory, otherwise you'd get and error.
if(data.hasOwnProperty(keys))
arr.reduce(callback,[initialValue])
[initialValue] is optional