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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.
Oops, I only created a solution that defines a teknonym for the oldest family member. And doesn't name the children... Back to the drawing board!
I don't it should be considered 'best practice' to use non builtin commands like sed when there is an easy builtin solution like string manipulation in this case.
It's dereferencing the result of .unwrap()
Compiler told me to dereference 'arr' by adding the *. Don't understand why yet...
Regarding the sample tests and test attempts for the bash solutions: there is no testing if there are any non-numericals on spots in the string that are reversed for for numbers. In bash at least. My script only tests: length of phone number and if the special characters are placed correctly.