I have a number of variables (whose values are computed in my program) of the same type, and in ghci I want to be able to call a function to print something computed from the value of one or more of these to a file. I want the file name to reflect the name of the variable. This is probably not clear, but conceptually the function to do the output would look something like this: someFunction :: MyTypeVariable -> String writeFileFor :: MyTypeVariable -> IO () writeFileFor v = do nameOfV <- someFunction v outh <- openFile nameOfV ++ ".txt" WriteMode outputstring = calculationsFrom v hPutStr outh outputstring hClose outh Is there any such "someFunction", or is there a way to build one? Thanks, John Velman