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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 might help: arr.filter(Boolean) is the same as: arr.filter( x => Boolean(x) )
Check my answer, I believe I did the same ( checking for carracters in between ) except I made it in 4 lines. Maybe there is some regex issues I didn't think about tho.
this one is so clean
this is clever but I think the filter(Boolean) is a bit hard to understand, or maybe it's because it's the first time I've seen it used like this... Cool nonetheless
it won't work on inputs like 0x88