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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 is under Ruby solutions though.
Edit: and the solution I have is a Ruby solution.
This is Python code, not Ruby code ;-)
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Thanks, I forgot about the ternary operator.
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Can someone explain this solution to me?
.chars will already give you an array.
there is no reason to rescue, nil will be returned anyway
It's important to remember that the evaluation of the last statement in a method will be returned in ruby. No need for explicitly returning, let the evaluation of the condition be the return.
This is a destructive solution. Unlike .first or .last, this will modify the original array so that the first element is perminently removed.
Join doesn't really need any arguments in this case.