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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.
That's true, however it doesn't hurt performance to use double quotes when not interpolating.
Personally I prefer to use double quotes all the time for consistency (I follow option B from the Ruby Style Guide).
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Hey JC-Morph,
The specification doesn't ask for a check after ghosts are instantiated, which I didn't feel was significant for the purpose of this kata.
However, if you feel it is, please feel free to make the appropriate changes.
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