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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.
My Regex didn't displayed very well as i sayed above, My full regex here: https://www.debuggex.com/r/bPKdkJfQVfnkQRay
This comment is hidden because it contains spoiler information about the solution
it shows me expected '01.02.2009' to match... at All possible days (10000 tests) section, but my regex really matches it.
I suffer with generetor function can u give me a hint