Hi, cafe,
all I want is to read the unread portion of a handle, without blocking
waiting for an EOF or a newline. My first attempt was to try with
hGetBufNonBlocking from System.IO, and other functions that use it in
its definition (directly or indirectly). But, unfortunately:
after reading in GHC's implementation of concurrency and even more
important in the documentation of hWaitForInput it seems clear that my
receiver thread blocks and the sender cannot be executed:
NOTE for GHC users: unless you use the -threaded flag, hWaitForInput
t where t = 0 will block all
On Thu, Mar 24, 2011 at 1:49 AM, Daniel Díaz danield...@asofilak.es wrote:
Hi, cafe,
all I want is to read the unread portion of a handle, without blocking
waiting for an EOF or a newline. My first attempt was to try with
hGetBufNonBlocking from System.IO, and other functions that use it in
On Thu, Mar 24, 2011 at 9:53 AM, oliver mueller
oliver.muel...@gmail.com wrote:
if anybody knows of a better way please let me know!
I'd recommending trying to fix your obscure FFI problems re: the
threaded RTS and go back to using that. Switching concurrency off
altogether is a curious response
Hi folks,
I don't have a GHC 7 environment running yet (it's on my list...) but I
received a bug report pointing me at this build failure:
http://hackage.haskell.org/packages/archive/testpack/2.0.1/logs/failure/ghc-7.0
Among other things, this noted:
Dependency QuickCheck =2.1.0.3: using
| class Monoid (GeneratorOf a) = Generable a where
| type GeneratorOf a :: * - *
| construct :: GeneratorOf a - a
|
| Now, it seems I need FlexibleInstances to do this when I'm using an
| associated type synonym, but I don't need the flexibility when using a
| multiparameter type class.
I've just tested this, and with GHC 7, cabal chooses QuickCheck 2.4,
whereas with GHC 6.12, it chooses 2.1. If I specify that 6.12 should
choose 2.4 as well, I get the same issue there. This is to be
expected, because I don't see the CPP checks you mentioned in
Test/QuickCheck/Instances.hs in
On Thu, Mar 24, 2011 at 9:30 AM, Erik Hesselink hessel...@gmail.com wrote:
I've just tested this, and with GHC 7, cabal chooses QuickCheck 2.4,
whereas with GHC 6.12, it chooses 2.1.
I believe that the behavior you're seeing is because the package
selection is biased by the state of your local
{-
- Hi all,
-
- I'm having trouble tying the recursive knot in one of my programs.
-
- Suppose I have the following data structures and functions:
-}
module Recursion where
import Control.Monad.Fix
import Data.Map ((!))
import qualified Data.Map as M
import Debug.Trace
newtype Key = Key {
On 03/24/2011 11:30 AM, Erik Hesselink wrote:
I've just tested this, and with GHC 7, cabal chooses QuickCheck 2.4,
whereas with GHC 6.12, it chooses 2.1. If I specify that 6.12 should
choose 2.4 as well, I get the same issue there. This is to be
expected, because I don't see the CPP checks you
Never mind. I figured it out on my own. Here's my solution for
posterity. There's probably a fix hiding in there somewhere - notice
the new type of reduce.
module Recursion where
import Data.Map ((!))
import qualified Data.Map as M
import Debug.Trace
newtype Key = Key { unKey :: String }
On Thu, Mar 24, 2011 at 4:02 PM, Joshua Ball joshbb...@gmail.com wrote:
Never mind. I figured it out on my own. Here's my solution for
posterity. There's probably a fix hiding in there somewhere - notice
the new type of reduce.
Yep, there is:
force :: M.Map Key Chain - M.Map Key [Int]
force
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On 11-03-23 05:31 PM, Ketil Malde wrote:
Any idea why it works in GHCI?
Documentedly, stack limit is 8M, and can be changed by +RTS -K42M (for
example).
Undocumentedly, certain magic numbers given to -K seem to waive the
limit (or set it so high I haven't fathomed).
GHC 6.10.4: 4 to 59
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