ref: e8facabf8870ecb9ea3a372517b2096d09aeea08
dir: /tests/Catch.hs/
module Catch(main) where
import Prelude
import Control.Exception
f :: [Int] -> Int
f (_:_) = 99
class C a where
m :: a -> Int
instance C ()
main :: IO ()
main = do
let sshow :: String -> String
sshow = show
exn :: SomeException -> IO String
exn e = return (displayException e)
x <- catch (return ("o" ++ "k")) (\ (_ :: SomeException) -> return "what?")
putStrLn $ sshow x
y <- catch (do { error "bang!"; return "yyy" }) exn
putStrLn $ sshow y
z <- catch (do { print (f []); return "zzz" }) exn
putStrLn $ sshow z
w <- catch (do { print (m ()); return "www" }) exn
putStrLn $ sshow w