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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.
wtf! is this
OP solved it, closing
Interesting
Wow! Nice!
This comment is hidden because it contains spoiler information about the solution
Very interesting method,
send()takes an operator string, as if this challenge was perfectly set up for your solution.description updated
Ah I think you were hitting the same problem as me! I also did a solution involving MUTATING the loop nodes. The rather unhelpful error message is coming from a test which calls your function TWICE on the same loop... now you know this you should be able to fix it!
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
Imho it's useless waste of time.
Why don't change it to return just an Array like [1, 3, 5, 2, 4, 6]???