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.
"Sparse" is defined over numerical indices only. ( Which are officially stored as strings, but whatever. )
Length cannot be smaller than the number of keys. When setting a length, any elements beyond the new length are deleted.