On 12-11-07 03:36 PM, timothyho...@seznam.cz wrote:
I am trying to catch an "thread blocked on MVar indefinitely
exception." Of course I can use ::SomeException as explained in
http://hackage.haskell.org/packages/archive/base/latest/doc/html/Control-Exception.html#g:3
but there is no explanation as to how to find the more case specific
exceptions.
In general, because Exception instances are Typeable instances, you can
get a name, and then you can use that for searches.
import Control.Exception
import Data.Typeable
main = do
aida <- try (readFile "no")
case aida of
Left (SomeException e) -> print (typeOf e)
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