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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.
Are you looping through vowels instead of string(a) with just replacing the desired chars ???
Sleek
You just want to escape the throwback errors
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Shorter code but is it cleaner? If I found this code in the wild I would have to think a long time about edge cases.