Hi,
I have another I/O problem. I need to time out when a Handle
blocks forever. I am using hWaitForInput anyway, so that
shouldn't be a problem, but the documentation says that
using this feature will block all IO threads? Is it much
work to fix this? I _could_ forkIO a racer thread myself, of
co
On Sun, Oct 03, 2004 at 04:03:55PM +0200, Carsten Schultz wrote:
> Hi Tomasz!
Hi Carsten!
> > To my surprise, it was much slower and made many allocations:
> [...
> > Then I noticed the cause:
> > GHC.Prim.<# returns a boxed, heap allocated Bool, and so do other
> > primitive comparison
Hi Tomasz!
On Sun, Oct 03, 2004 at 03:07:01PM +0200, Tomasz Zielonka wrote:
> Hello!
>
> I was playing with monadic looping a'la replicateM_ and I created this
> function:
>
> for :: Int -> IO () -> IO ()
> for 0 _ = return ()
> for n x = x >> for (n - 1) x
>
> Compiled with -O2, it
On Sun, Oct 03, 2004 at 03:07:01PM +0200, Tomasz Zielonka wrote:
> Then I noticed the cause:
> GHC.Prim.<# returns a boxed, heap allocated Bool, and so do other
> primitive comparison operators.
>
> Would it be difficult to add Bool unboxing to GHC?
> Maybe it would suffice to use preallo
Hello!
I was playing with monadic looping a'la replicateM_ and I created this
function:
for :: Int -> IO () -> IO ()
for 0 _ = return ()
for n x = x >> for (n - 1) x
Compiled with -O2, it is really fast and makes no unnecessary
allocations. Tested with this main
main = for 1
