I'd like to announce the first release of a new tool called hackage-proxy.
The purpose is to provide a local proxy for a Hackage server, which somehow
modifies files in transport. The motivating case for this was getting more
meaningful error output from Stackage when compiling against GHC HEAD.
Wednesday 27-Feb-2013 6-45pm (prompt)
City University, College Building, St John Street, London. EC1V 4PB
http://www.meetup.com/London-HUG/events/103545552/
Being Lazy
Speaker: Peter Marks
This talk will explore lazy evaluation in Haskell. After a brief
introduction to non-strictness, and
Has anyone formulated a reasonable set of laws for MonadReader?
The instances for continuation-based monad transformers contradict any
intuition about local and ask.
E.g. for LogicT:
flip runReader 1 $ observeAllT $ local (const 2) ask
[1]
flip runReader 1 $ observeAllT $ local (const
Hello cafe,
I've been poking around and I haven't seen this addressed anywhere except
obliquely in the end of section 8.5.1 of the report, where it says that
variable argument C functions aren't supported:
http://www.haskell.org/onlinereport/haskell2010/haskellch8.html
The scenario is pretty
Hi,
I think libffi might be the answer here. Please see Hackage and Haskell
wiki for details.
Cheers,
Krzysztof Skrzetnicki
17-02-2013 12:18, Ryan Newton rrnew...@gmail.com napisał(a):
Hello cafe,
I've been poking around and I haven't seen this addressed anywhere except
obliquely in the end
Hi folks. Hackage contains several JSON packages but as far as I see,
they all provide 'static' conversion from JSON format to Haskell data
type. Is there a method of converting object containing optional filed
'a' to for example Maybe a.
Thanks, Sergey
On 02/17/2013 04:01 PM, Sergey Mironov wrote:
Hi folks. Hackage contains several JSON packages but as far as I see,
they all provide 'static' conversion from JSON format to Haskell data
type. Is there a method of converting object containing optional filed
'a' to for example Maybe a.
On 02/17/2013 03:01 PM, Sergey Mironov wrote:
Hi folks. Hackage contains several JSON packages but as far as I see,
they all provide 'static' conversion from JSON format to Haskell data
type. Is there a method of converting object containing optional filed
'a' to for example Maybe a.
Assuming
Hit this compiling darcs on a new machine. . . . But it may be more
generic to Haskell platform itself. Bottom line, it presents a
situation where someone could end up dead-in-the-water with respect to
using haskell libraries. I burned a lot of time tracking this down, it
may discourage users
With apologies for prolonging a tangential topic, I'd like to
sharpen anti-ifdef comments that have been posted already.
1. An ifdef for portability is an admission of nonportability.
What it does is point out a nonportability--a useful crutch
for maintainers, but a crutch nonetheless.
I have a tiny DSL that actually works quite well. When I say
import language.CWMWL
main = runCWMWL $ do
out (matrixMult, A, 1, row, matrix-row)
then runCWMWL is a function that is exported by language.CWMWL. This parses the
experession and takes some action.
Now, A is the name of the
Hi all,
as some of you may have noticed Lambdabot doesn't build on GHC 7.6.1 due to
OldException being
removed (and a few other changes). I updated the code so that it builds on
latest GHC release.
The updated code is available here:
https://github.com/killy/lambdabot/tree/upstream
It
Quoth Ryan Newton rrnew...@gmail.com,
The scenario is pretty simple. I generate C code at runtime. I compile it
to a .so. I know how many arguments it expects (but only at runtime), and
I get a FunPtr back from 'dlsym'. How do I call it?
I was hoping there would be some Raw lower level
The scenario is pretty simple. I generate C code at runtime. I compile
it
to a .so. I know how many arguments it expects (but only at runtime),
and
I get a FunPtr back from 'dlsym'. How do I call it?
I feel that I might be confused about the problem, but since I don't
see anyone
Quoth Ryan Newton rrnew...@gmail.com,
...
Anyway, in this case it wasn't *too *painful to just generate a bunch of
extra boilerplate C functions for (1) creating a data structure to hold the
arguments, (2) loading them in one at a time, and (3) deallocating the
structure when the call is done.
On 17 February 2013 18:03, Jan Stolarek jan.stola...@p.lodz.pl wrote:
...
This changes would be quite invasive and code wouldn't be compatible with the
lambdabot repo on
haskell.org. So before I start making any of them I would like to hear from
the community if such
changes in the source
Sounds great. Lambdabot is an important icon to the Haskell community; it
will be nice to brush off the bitrot and make lambdabot easier for the
average Haskeller to install without having to rely on Cale keeping it
running on irc (grateful, though we are).
-- Dan Burton
On Feb 17, 2013 3:04 PM,
2013/2/17 Oliver Charles ol...@ocharles.org.uk:
On 02/17/2013 03:01 PM, Sergey Mironov wrote:
Hi folks. Hackage contains several JSON packages but as far as I see,
they all provide 'static' conversion from JSON format to Haskell data
type. Is there a method of converting object containing
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