sjoerd at w3future.com
Fri Jun 15 11:39:21 CEST 2012
On Fri, 15 Jun 2012 09:07:54 0100, Simon Marlow <marlowsd at gmail.com> wrote:
> I still need to ponder the Applicative version, I'm not familiar with
> Control.Newtype. I would still like the Traversable abstraction I
> mentioned in my last message.
Control.Newtype is not important. I added it just to be able to write
ala' Concurrently traverse getURL urls
runConcurrently $ traverse (Concurrently . getURL) urls
But it is probably nicer to have
doConcurrently :: Traversable t => (a -> IO b) -> t a -> IO (t b)
then you could write
doConcurrently getURL urls
and your doConcurrently would just be "doConcurrently id".
I updated the code at https://gist.github.com/2926572
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