You're welcome!
On 04/28/2015 09:54 PM, Ray Qiu wrote:
Nice! Thanks!
On Tuesday, April 28, 2015 at 9:45:07 PM UTC-7, Gabriel Gonzalez wrote:
Add a `StateT` layer to each component's base monad. They will
then share that state. Here is an example:
import Control.Monad (forever)
import Control.Monad.Trans.State
import Pipes
producer :: Producer Int (StateT Int IO) r
producer = forever (do
n <- lift get
lift (put $! n + 1)
yield n )
consumer :: Consumer Int (StateT Int IO) r
consumer = forever (do
n <- await
lift (lift (print n))
lift (modify (+ 1)) )
main :: IO ()
main = evalStateT (runEffect (producer >-> consumer)) 0
That will print:
0
2
4
6
...
On 04/28/2015 09:36 PM, Ray Qiu wrote:
How to share state between pipes Consumers/Pipes without using
ioref? Thanks!
--
You received this message because you are subscribed to the
Google Groups "Haskell Pipes" group.
To unsubscribe from this group and stop receiving emails from it,
send an email to haskell-pipe...@googlegroups.com <javascript:>.
To post to this group, send email to haskel...@googlegroups.com
<javascript:>.
--
You received this message because you are subscribed to the Google
Groups "Haskell Pipes" group.
To unsubscribe from this group and stop receiving emails from it, send
an email to haskell-pipes+unsubscr...@googlegroups.com
<mailto:haskell-pipes+unsubscr...@googlegroups.com>.
To post to this group, send email to haskell-pipes@googlegroups.com
<mailto:haskell-pipes@googlegroups.com>.
--
You received this message because you are subscribed to the Google Groups "Haskell
Pipes" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to haskell-pipes+unsubscr...@googlegroups.com.
To post to this group, send email to haskell-pipes@googlegroups.com.
