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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.
I thought I was clever because I used the verboten 'eval()' function
to sanitize a bunch of the garbage.
Author, please add the alphanumeric condition as a bullet point, everyone is getting tripped up either not looking at the condition or thinking you are implying that you can assume the test will only supply alphanumeric values.
Hmmm, what if someone tried to enter an ascii character in their pin that evaluated to a number between 1-9?
Like a horizontal tab character (9) for instance? Would this pass true?