forM_ package:massiv

forM_ :: (Source r a, Index ix, Monad m) => Array r ix a -> (a -> m b) -> m ()
massiv Data.Massiv.Array
Just like mapM_, except with flipped arguments.

Examples

Here is a common way of iterating N times using a for loop in an imperative language with mutation being an obvious side effect: 
>>> import Data.Massiv.Array as A

>>> import Data.IORef

>>> ref <- newIORef 0 :: IO (IORef Int)

>>> A.forM_ (range Seq (Ix1 0) 1000) $ \ i -> modifyIORef' ref (+i)

>>> readIORef ref
499500
iforM_ :: (Source r a, Index ix, Monad m) => Array r ix a -> (ix -> a -> m b) -> m ()
massiv Data.Massiv.Array
Just like imapM_, except with flipped arguments.
sforM_ :: (Stream r ix a, Monad m) => Array r ix a -> (a -> m b) -> m ()
massiv Data.Massiv.Vector
Same as smapM_, but with arguments flipped.

Examples

siforM_ :: forall r ix a b m . (Stream r ix a, Monad m) => Array r ix a -> (ix -> a -> m b) -> m ()
massiv Data.Massiv.Vector
Same as simapM_, but with arguments flipped.

Examples