Hi,
On 28/08/13 21:05, Wvv wrote:
Let we have data in one module as this:
data Person = Person { personId :: Int, name :: String }
data Address a = Address { personId :: Int, address :: String , way ::
a}
It was discussed a lot in topics OverloadedRecordFields
This is
Hi,
Thank you for the reply.
Unlikely it is the case (if I understand it correctly). The exception is
thrown by enumSocket, I added traces to prove that. And it is
propagated to
runWithSocket (
Hi,
Isn't it by design? Consider the next code:
import Data.Enumerator (($$), (==))
import qualified Data.Enumerator as E
import qualified Data.Enumerator.List as EL
import Control.Exception
import Control.Monad.IO.Class
main :: IO ()
main = do
res - E.run $ myEnum $$
EL.take 5
Hi,
I am positive about the following situation, but I can't find any
concrete answer on the Web. Can anyone confirm this ?
In template-haskell-2.7.0, the following quote
[t| () |]
appears as a (ConT name), where name is the name for unit. However,
in template-haskell-2.8.0, the same quote
I can't answer about expected behavior, but I can say that those two
constructions should be considered identical by the $(…) splice construct. For
better or worse, Template Haskell often offers multiple ways of encoding the
same source Haskell phrase, and any code that processes Template
Hi,
Cabal 1.18 is still in the release candidate stage so it has in fact not
been released yet. We could either bump the dependency on base to 4.8
before the 1.8 release or we could make a Cabal-1.8.0.1 release together
with the GHC release that bumps the dependency.
-- Johan
On Wed, Aug 28,
I can't answer about expected behavior, but I can say that those
two constructions should be considered identical by the $(…) splice
construct. For better or worse, Template Haskell often offers
multiple ways of encoding the same source Haskell phrase, and any
code that processes Template
Hi Jose and Richard,
haskell-src-meta has Language.Haskell.Meta.Utils.normalizeT which can
help with making code treat the two constructs equivalently, though
I imagine using th-desugar instead will make that process harder to
mess up.
Adam
On Thu, Aug 29, 2013 at 10:13 AM, Richard Eisenberg
I've always considered Unit to just be a nullary tuple. This intuition has
never steered me wrong, and it seems that Template Haskell is making the same
assumption. If there's some reason that this conflation of ideas is wrong, I
would be eager to know -- th-desugar makes this assumption in
Hello.
While hacking in one of my projects, one of my modules stopped to compile
for apparently no reason. The compiler just freezes (like if it where in an
infinite loop) while trying to compile that particular module. Since I had
this problem I have been trying to reduce the problem as much as
On Thu, Aug 29, 2013 at 12:08 PM, Daniel Díaz Casanueva
dhelta.d...@gmail.com wrote:
Since this problem can be OS-dependent, my system is Debian 7 and I didn't
try yet to reproduce my problem in other systems (mainly because I don't
have access to other systems at the moment).
FWIW, it’s not
This is a known GHC bug that (i believe?) is fixed in head. Links to the
relevant tickets from when I hit this problem trying to build lambdabot are
here https://github.com/mokus0/random-fu/issues/13
The work around is to build those libraries with -O1
On Thu, Aug 29, 2013 at 1:00 PM, Manuel
Hi all!
(in case you don't read /r/haskell : ))
Stephen Blackheath and I are extremely happy to report that as of today,
GHC can natively build binaries for iOS devices and the iOS Simulator.
You'll find everything you need here:
http://ghc.haskell.org/trac/ghc/wiki/Building/CrossCompiling/iOS
Stephen provided some more credits — thanks so much to all!
Three connected projects concerning cross-compilation:
*Registerised ARM support, added using David Terei's LLVM compiler back end
with Stephen Blackheath doing an initial ARMv5 version and LLVM patch and
Karel Gardas working on
OK
I have a bunch of BSON documents that I convert to ByteStrings, put in a
Map, and write to a socket based on the response. I noticed some high
memory usage (in the GBs) so I decided to investigate. I simplified my
problem into a small program that demonstrates clearer what is happening.
I
A good starting point is to estimate how much space you think the data
should take using e.g.
http://blog.johantibell.com/2011/06/memory-footprints-of-some-common-data.html
If you do that, is the actual space usage close to what you expected?
On Thu, Aug 29, 2013 at 5:35 PM, Kyle Hanson
I've just uploaded my new th-desugar package, which enables easier processing
of Template Haskell source syntax by desugaring it into a much simpler core
language. The meaning of the code after desugaring is identical to before
desugaring, but the syntax is much simpler. To wit, th-desugar
On 30/08/2013, at 2:38 AM, Daniel Díaz Casanueva wrote:
While hacking in one of my projects, one of my modules stopped to compile for
apparently no reason. The compiler just freezes (like if it where in an
infinite loop) while trying to compile that particular module. Since I had
this
I can't install tasty with cabal. Anyone with the same issue or a fix?
$ cabal install tasty
...
Test\Tasty\Core.hs:147:11: Not in scope: `witness'
___
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
Greetings café,
Perhaps some saddening news for Markdown fans out there. As you might
remember, there was a fair amount of push for having Markdown as an
alternate syntax for Haddock.
Unfortunately, this is probably not going to happen for reasons listed
on the post I just published at [1].
Building a map with foldr seems unwise, have you tried doing it with
fromListWith instead? Or foldl'? In either case, since you don't even put
the map into WHNF, none of the computation is done at all in either case
until the first lookup.
On Thu, Aug 29, 2013 at 3:35 PM, Kyle Hanson
Thanks Bob,
I made it foldr because it was meant to simulate the sequential IO action
that my server uses to populate the Map.
I found the problem to be that I need to force the map to evaluate so
adding a little $! fixed the problem
--
Kyle Hanson
On Thu, Aug 29, 2013 at 9:09 PM, Bob
foldl' is the right way to simulate the sequential IO action, foldr would
be doing it in reverse (and for large enough input will stack overflow).
On Thu, Aug 29, 2013 at 9:33 PM, Kyle Hanson hanoo...@gmail.com wrote:
Thanks Bob,
I made it foldr because it was meant to simulate the
23 matches
Mail list logo
