Okay, ski (of Freenode fame) helped me with the first problem. Now I need to figure out how to use specific types. given
module Main where import System.Environment import PrepData
data ProcessData = ProcessData { flatfile :: String , processfunc :: [String] -> Table StudentsOrActivities Value }
main = undefined
and
module PrepData where data Value = Cost Int | ID Int type Tname = String data StudentsOrActivities = Students String | Activities String data Table soa v = PopTable { tableName :: Tname , tableColumns :: [(soa, v)] } deriving (Show, Read)
popStudents :: [String] -> Table Students ID popStudents flatFile = undefined
is it clear what I am trying to do in popStudents? here's the error I get PrepData.lhs:10:35: Not in scope: type constructor or class `Students' PrepData.lhs:10:44: Not in scope: type constructor or class `ID'