I've got this
import Data.Tuple
fswp :: (a, b) -> (b, a)
fswp = Data.Tuple.swap
and get this
• No instance for (Show ((a0, b0) -> (b0, a0)))
arising from a use of ‘print’
(maybe you haven't applied a function to enough arguments?)
• In a stmt of an interactive GHCi command: print it
Not sure why or what to do to correct it.
⨽
Lawrence Bottorff
Grand Marais, MN, USA
borgauf(a)gmail.com
