conduit-extra-1.1.3: Batteries included conduit: adapters for common libraries.

Safe HaskellNone



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.



lazyConsume :: (MonadBaseControl IO m, MonadActive m) => Source m a -> m [a]Source

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 whereSource

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