Yes, there are several reasons for having UNSAFE in the name. :-)
-- Lennart
Ashley Yakeley wrote:
At 2002-11-18 11:05, Sven Panne wrote:
global :: a -> IORef a
global a = unsafePerformIO (newIORef a)
This is useful, you can do this with it:
ref = global Nothing
convert :: a -> IO b
convert a = do
writeIORef ref (Just a)
Just b <- readIORef ref
return b
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