[Haskell-cafe] compilation succeeds -- execution fails
jonathanccast at fastmail.fm
Sun Mar 30 14:18:59 EDT 2008
On 29 Mar 2008, at 10:21 PM, Jason Dusek wrote:
> Stefan O'Rear <stefanor at cox.net> wrote:
>> The only type that you are allowed to assume corresponds to a C
>> int is
>> CInt, in the Foreign.C.Types module. This probably isn't the
>> but it could make problems of its own on a 64-bit or otherwise weird
> So say I turn everything back to pointers to CInt, what is the
> accepted way to convert from CInt to Int
Use fromIntegral to go CInt -> Int, Int -> CInt. This only depends
on CInt being an Integral type.
> and CInt to Char?
Use toEnum . fromIntegral
More information about the Haskell-Cafe