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.
yeah, it doesnt filter the entire array twice
You could easily test that, but, no, it doesn't mutate the array.
Does this function mutates
arr? I want to mark this as a best practise but I don't know if it's the case.why not?
This is art ^^
Awesome ;)
Oh you got it right! This is the right solution!
This is the best ˆˆ
Great
This is a great one. Love this declarative + es6 way
ewww
This one is the cleanest. Although I'd rename the
aforarr. For better understanding ^^