| Safe Haskell | Trustworthy |
|---|---|
| Language | Haskell98 |
Data.Conduit.Lazy
Description
Use lazy I/O for consuming the contents of a source. Warning: All normal
warnings of lazy I/O apply. In particular, if you are using this with a
ResourceT transformer, you must force the list to be evaluated before
exiting the ResourceT.
Synopsis
- lazyConsume :: forall m a. (MonadUnliftIO m, MonadActive m) => Source m a -> m [a]
- class Monad m => MonadActive m where
- monadActive :: m Bool
Documentation
lazyConsume :: forall m a. (MonadUnliftIO m, MonadActive m) => Source m a -> m [a] #
Use lazy I/O to consume all elements from a Source.
This function relies on monadActive to determine if the underlying monadic
state has been closed.
Since 0.3.0
class Monad m => MonadActive m where #
Determine if some monad is still active. This is intended to prevent usage
of a monadic state after it has been closed. This is necessary for such
cases as lazy I/O, where an unevaluated thunk may still refer to a
closed ResourceT.
Since 0.3.0
Methods
monadActive :: m Bool #