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Removed comment that 'the code works but is not good'. That is the nature of questions on this site. Corrected some English, and renamed the file to `seeds.rb`.
Thanks for the additional feedback. I also found this StackOverflow question and this book that support the fact that public_send (and send) is acceptable to use. Thanks once again.
Thanks so much. You are quite correct about the :level key being unused, and with the repeated ArgumentError for invalid dates. I have 2 questions about your proposal for Formatter. First, did you purposefully symbolize :nil? Secondly, is it not a bit 'dirty' to call functions by a name, with public_send? It seems like it could backfire somehow by allowing client code to call an unwanted function.
I think this is good, because it doesn't check for nil? explicitly and only has one h[k] = assignment. In addition, it gets rid of the Array.new() and the flatten, as you mentioned.
