-- Standard combinators, specialised
returnM, thenM, thenM_, failM, failWithM,
mappM, mappM_, mapSndM, sequenceM, sequenceM_,
- foldlM, foldrM,
+ foldlM, foldrM, anyM,
mapAndUnzipM, mapAndUnzip3M,
checkM, ifM, zipWithM, zipWithM_,
mapAndUnzip3M :: (a -> IOEnv env (b,c,d)) -> [a] -> IOEnv env ([b],[c],[d])
checkM :: Bool -> IOEnv env a -> IOEnv env () -- Perform arg if bool is False
ifM :: Bool -> IOEnv env a -> IOEnv env () -- Perform arg if bool is True
+anyM :: (a -> IOEnv env Bool) -> [a] -> IOEnv env Bool
mappM f [] = return []
mappM f (x:xs) = do { r <- f x; rs <- mappM f xs; return (r:rs) }
mappM_ f [] = return ()
mappM_ f (x:xs) = f x >> mappM_ f xs
+anyM f [] = return False
+anyM f (x:xs) = do { b <- f x; if b then return True
+ else anyM f xs }
+
zipWithM :: (a -> b -> IOEnv env c) -> [a] -> [b] -> IOEnv env [c]
zipWithM f [] bs = return []
zipWithM f as [] = return []