Re: [Haskell-cafe] how to catch keyboard interrupts?

This is pretty cool, but I have one warning: On Sat, Feb 23, 2008 at 4:37 PM, Uwe Hollerbach wrote:

...

data MyInterrupt = MyInt Int instance Typeable MyInterrupt where typeOf x = typeOf (0 :: Int)

I am pretty sure that this makes Dynamic unsound; you could accidentally cast from an Int to a MyInterrupt or vice versa. Try this instead:

data MyException = Interrupt deriving Typeable

then you can safely use throwDyn and catchDyn on this type. -- ryan