From: Sigbjorn Finne [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
References: [EMAIL PROTECTED]
Date: Mon, 26 Nov 2001 12:30:47 -0800
Sven Eric Panitz [EMAIL PROTECTED] writes:
It seems that the Socket library does still not
Conclusion: you're hosed with ghc-5.02.1 and its socket libs under
Win32. Sorry.
If you don't mind getting your hands a (little) bit dirty, here's a story
that will work ghc-5.02.1:
* edit SocketPrim.hi (and SocketPrim.p_hi), to instead of saying
Socket in its __export section it
It would occasionally be nice to have a function
cast :: (Typeable a,Typeable b) = a - Maybe b
which returns Just a if a and b have the same type, and Nothing otherwise.
This may seem rather a curious need, but it arises with existential
types; if you have
data A = forall a . (context) = A
George Russell [EMAIL PROTECTED] writes:
cast :: (Typeable a,Typeable b) = a - Maybe b
cast = fromDynamic . toDyn
My question is: is this the most efficient way of doing it, or is
there a better way?
I think I'd do it that way. toDyn and fromDynamic are both pretty
simple functions.
