Also, if you are trying to display a line that looks like
insert 5
or
consume 6
then consider using
> putStrLn ("insert " ++ show r)
> putStrLn ("consume " ++ show r)
instead of
> print ("insert " ++ show r)
> print ("consume " ++ show r)
to avoid printing out the extra quotation marks. The function print is
defined in the prelude as
> print :: Show a => a -> IO ()
> print x = putStrLn (show x)
also, you could do:
> putStrLn $ "insert " ++ show r
because the $ infix operator is just a tightly binding function
application... you can think of it as a sort of left parenthesis that
automatically adds a right parenthesis at the end of your expression.
Jared.
_______________________________________________
Haskell-Cafe mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/haskell-cafe
