poke package:unliftio

poke :: Storable a => Ptr a -> a -> IO ()
unliftio UnliftIO.Foreign
Write the given value to the given memory location. Alignment restrictions might apply; see peek.
pokeArray :: (MonadIO m, Storable a) => Ptr a -> [a] -> m ()
unliftio UnliftIO.Foreign
Lifted pokeArray.
pokeArray0 :: (MonadIO m, Storable a) => a -> Ptr a -> [a] -> m ()
unliftio UnliftIO.Foreign
Lifted pokeArray0.
pokeByteOff :: Storable a => Ptr b -> Int -> a -> IO ()
unliftio UnliftIO.Foreign
Write a value to a memory location given by a base address and offset. The following equality holds: 
pokeByteOff addr off x = poke (addr `plusPtr` off) x
pokeElemOff :: Storable a => Ptr a -> Int -> a -> IO ()
unliftio UnliftIO.Foreign
Write a value to a memory area regarded as an array of values of the same kind. The following equality holds: 
pokeElemOff addr idx x = 
poke (addr `plusPtr` (idx * sizeOf x)) x