stToIO

stToIO :: ST RealWorld a -> IO a
base Control.Monad.ST.Lazy
A monad transformer embedding lazy state transformers in the IO monad. The RealWorld parameter indicates that the internal state used by the ST computation is a special one supplied by the IO monad, and thus distinct from those used by invocations of runST.
stToIO :: ST RealWorld a -> IO a
base Control.Monad.ST
A monad transformer embedding strict state transformers in the IO monad. The RealWorld parameter indicates that the internal state used by the ST computation is a special one supplied by the IO monad, and thus distinct from those used by invocations of runST.
unsafeSTToIO :: ST s a -> IO a
base Control.Monad.ST