Control.Concurrent.Chan.Split

Chan pairs

newSplitChan :: IO (InChan a, OutChan a)

Create corresponding read and write ends of a chan pair. Writes to the InChan side can be read on the OutChan side.

data InChan i

The write side of a chan pair

Instances

Cofunctor InChan

WritableChan InChan

data OutChan o

The read side of a chan pair

Instances

Functor OutChan

ReadableChan OutChan

Utility functions:

getChanContents :: OutChan a -> IO [a]

Return a lazy list representing the contents of the supplied OutChan, much like System.IO.hGetContents.

dupChan :: OutChan a -> IO (OutChan a)

Duplicate an OutChan: the duplicate channel begins empty, but data written to the corresponding InChan will appear in both, i.e. consuming a value from the copy will have no affect on the values in the original OutChan.

Supporting module

module Control.Concurrent.Chan.Class