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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.
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The provided unit test is faulty; it tries to match the conversion of ascii->hex to the hex->ascii conversion.
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Is it possible to access the solutions source code that is being tested?
The usecase here would be to disallow the use of certain language keywords that cannot be overridden and cannot easily be tested for during runtime. E.g. "Don't use the 'if' keyword in this kata"
I would love to see a more detailed description as to what is considered a valid email in this context. The 'false' example given is in fact a valid email address. What about +-Addresses? Or email routing with multiple @ signs? Embedded comments?
As it stands I don't even know where to start with the description given, unless you want a local part, a domain with at least a subdomain and exactly one '@'. If so, please do specify in the description.