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rrichardsonv/gist:c9f89c3b45a7dfc21dda126b448d390f

Created January 11, 2017 00:13
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Cams_query
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gistfile1.txt
self.guesses.select(:card_id).group(:card_id).having("count(*) = 1").length
#returns number of correct cards on first guess.
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