-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | (C)oncurrent (M)onoidal (F)olds
--   
--   This package provides concurrent monoidal folds over various
--   structures. Because the folds are concurrent, the monoids are assumed
--   to be commutative.
@package cmf
@version 0.1


-- | This module provides many concurrent monoidal folds for commutative
--   monoids.
--   
--   Some notes (applies to all folds):
--   
--   <ol>
--   <li>This module is intended to be imported qualified to avoid name
--   clashing.</li>
--   <li>Accumulation is strict.</li>
--   <li>Exceptions that occur will accumulate into a <a>CmfException</a>
--   and be re-thrown.</li>
--   </ol>
module Cmf

-- | A concurrent monoidal fold over some <a>Foldable</a>.
--   
--   This operation may fail with:
--   
--   <ul>
--   <li><a>CmfException</a> if any of the threads throws an
--   exception.</li>
--   </ul>
foldMap :: forall t m a. (Foldable t, Monoid m) => (a -> IO m) -> t a -> IO m

-- | A concurrent monoidal fold (with keys) over a <a>Map</a>.
--   
--   This operation may fail with:
--   
--   <ul>
--   <li><a>CmfException</a> if any of the threads throws an
--   exception.</li>
--   </ul>
foldMapWithKey :: Monoid m => (k -> a -> IO m) -> Map k a -> IO m

-- | An exception to be re-thrown by a fold in this module. It is just an
--   accumulation of all the exceptions that occurred among the running
--   threads.
newtype CmfException
CmfException :: [SomeException] -> CmfException
instance GHC.Exception.Type.Exception Cmf.CmfException
instance GHC.Generics.Generic Cmf.CmfException
instance GHC.Show.Show Cmf.CmfException