calculateSupport :: Int     -- ^ total number of transactions
                 -> Int     -- ^ number of occurences
                 -> Float   -- ^ support
calculateSupport transactionsSize = (/ int2Float transactionsSize) . int2Float
calculateSupport :: Int     -- ^ total number of transactions
                 -> Int     -- ^ number of occurences
                 -> Float
calculateSupport transactionsSize = (/ int2Float transactionsSize) . int2Float
calculateSupport transactionsSize = (/ int2Float transactionsSize) . int2Float