Hoogle Search
Within LTS Haskell 24.36 (ghc-9.10.3)
Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.
sequence_ :: (Foldable t, Monad m) => t (m a) -> m ()numeric-prelude NumericPrelude Evaluate each monadic action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results see sequence. sequence_ is just like sequenceA_, but specialised to monadic actions.
sequence_ :: (Foldable t, Monad m) => t (m a) -> m ()numeric-prelude NumericPrelude.Base Evaluate each monadic action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results see sequence. sequence_ is just like sequenceA_, but specialised to monadic actions.
sequenceA :: (Traversable t, Applicative f) => t (f a) -> f (t a)numhask NumHask.Prelude Evaluate each action in the structure from left to right, and collect the results. For a version that ignores the results see sequenceA_.
Examples
Basic usage: For the first two examples we show sequenceA fully evaluating a a structure and collecting the results.>>> sequenceA [Just 1, Just 2, Just 3] Just [1,2,3]
>>> sequenceA [Right 1, Right 2, Right 3] Right [1,2,3]
The next two example show Nothing and Just will short circuit the resulting structure if present in the input. For more context, check the Traversable instances for Either and Maybe.>>> sequenceA [Just 1, Just 2, Just 3, Nothing] Nothing
>>> sequenceA [Right 1, Right 2, Right 3, Left 4] Left 4
sequenceA_ :: (Foldable t, Applicative f) => t (f a) -> f ()numhask NumHask.Prelude Evaluate each action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results see sequenceA. sequenceA_ is just like sequence_, but generalised to Applicative actions.
Examples
Basic usage:>>> sequenceA_ [print "Hello", print "world", print "!"] "Hello" "world" "!"
sequence_ :: (Foldable t, Monad m) => t (m a) -> m ()numhask NumHask.Prelude Evaluate each monadic action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results see sequence. sequence_ is just like sequenceA_, but specialised to monadic actions.
sequence_ :: (Foldable t, Monad m) => t (m a) -> m ()numhask NumHask.Prelude Evaluate each monadic action in the structure from left to right, and ignore the results. For a version that doesn't ignore the results see sequence. sequence_ is just like sequenceA_, but specialised to monadic actions.
-
reflex Reflex.Adjustable.Class Traverse a DMap of Adjustable actions, running each of them. The provided Event of patches to the DMap can add, remove, or update values.
-
reflex Reflex.Adjustable.Class Traverses a DMap of Adjustable actions, running each of them. The provided Event of patches to the DMap can add, remove, update, move, or swap values.
-
reflex Reflex.EventWriter.Base Like runWithReplaceEventWriterTWith, but for sequenceDMapWithAdjust.
sequence_ :: (Monad m, FoldableLL full (m item)) => full -> m ()ListLike Data.ListLike Evaluate each action, ignoring the results. Same as mapM_ id.