Name:Unknown
Clan:Unknown
Member Since:Feb 2018
Last Seen:Dec 2023
Profiles:
Following:2
Followers:1
Allies:0
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.
This comment is hidden because it contains spoiler information about the solution
indexOf will always return the index of the first occurrence of an array item. In ['a', 'b', 'a'], the indexOf('a') is 0. When using filter and the loop reaches the second 'a', it will drop it since that particular 'a' has an index of 2.