Thanks. I've just built GHC HEAD on Mac OS X Lion, and tested by
installing libraries with --enable-shared and loading a GLFW program
into GHCi. Using ghci -fno-ghci-sandbox, everything works great
including closing and restarting GL window multiple times. Can't wait
for the official release of
Yay!
Thanks Paul! It's always good to have more folks confirm the problems are
solved than not!
Another cool direction 7.8 will allow is using the various llvm ffi
bindings from ghci!
On Wednesday, October 2, 2013, Paul Liu wrote:
Thanks. I've just built GHC HEAD on Mac OS X Lion, and tested
I've heard good things about teespring. I gather it's like a kickstarter
but specifically for t-shirts. They seem to have some procedures[1] in
place specifically for non-profit organizations, which might be a good
option for supporting haskell.org.
[1]: http://teespring.com/solutions
Ryan Newton wrote:
Here are some examples:
-
data Foo = Bar | Baz
instance Eq Foo where
_ == _ = True
instance Ord Foo where
compare Bar Bar = EQ
compare Bar Baz = LT
compare _ _ = error I'm partial!
On Wed, Oct 02, 2013 at 11:24:39AM +0200, Heinrich Apfelmus wrote:
I'm not sure whether the Eq instance you mention is actually
incorrect. I had always understood that Eq denotes an equivalence
relation, not necessarily equality on the constructor level.
There's a difference between
* Heinrich Apfelmus apfel...@quantentunnel.de [2013-10-02 11:24:39+0200]
In other words, equality of abstract data types is different from
equality of algebraic data types (constructors). I don't think you'll
ever be able to avoid this proof obligation that the public API of an
abstract data
Hi,
as for wxHaskell, it is currently maintained at
https://github.com/wxHaskell/wxHaskell, compilable with wxWidgets 2.9.5 and GHC
7.6. Work is underway to fix various bugs introduced over time by changes in
wxWidgets, but we (i.e. https://github.com/wxHaskell?tab=members) hope to
release
Hi,
Roman Cheplyaka wrote:
It still seems to fit nicely into Safe Haskell. If you are the
implementor of an abstract type, you can do whatever you want in the Eq
instance, declare your module as Trustworthy, and thus take the
responsibility for soundness of that instance w.r.t. your public API.
Hi,
I'm trying to get things up and running but I keep having problems with the
following.
When I follow the instructions on
https://github.com/acowley/roshask/wiki/Getting-Started
I run into the following:
tijn@tt:~/MyPackage$ roshask dep
Looking for [std_msgs], dependencies of
* Tillmann Rendel ren...@informatik.uni-marburg.de [2013-10-02 13:19:38+0200]
Hi,
Roman Cheplyaka wrote:
It still seems to fit nicely into Safe Haskell. If you are the
implementor of an abstract type, you can do whatever you want in the Eq
instance, declare your module as Trustworthy, and
I do think something has to be done to have an Eq and Ord with more strict
laws.
* Operators in Eq and Ord diverge iff any of their parameters are bottom.
* The default definitions of (/=), (), () and `compare` are law.
* (==) is reflexive and transitive
* (=) is antisymmetric ((x = y y = x)
On Wed, 2 Oct 2013 15:46:42 +0200, Stijn van Drongelen rhym...@gmail.com
wrote:
I do think something has to be done to have an Eq and Ord with more strict
laws.
* Operators in Eq and Ord diverge iff any of their parameters are bottom.
* The default definitions of (/=), (), () and `compare`
Only for meanings of better which do not imply as good performance.
On 2 October 2013 14:46, Stijn van Drongelen rhym...@gmail.com wrote:
I do think something has to be done to have an Eq and Ord with more strict
laws.
* Operators in Eq and Ord diverge iff any of their parameters are
On Wed, Oct 2, 2013 at 3:49 PM, Niklas Haas hask...@nand.wakku.to wrote:
On Wed, 2 Oct 2013 15:46:42 +0200, Stijn van Drongelen rhym...@gmail.com
wrote:
I do think something has to be done to have an Eq and Ord with more
strict
laws.
* Operators in Eq and Ord diverge iff any of their
Hi,
The best low-level foundation libraries that I know of are the
Enlightenment Foundation Libraries (EFL) [1,2]. They are cross-platform
: they support many backends (X11, OpenGL, framebuffer...) and are used
on desktops and mobile devices (even to provide games on the French Free
ISP
On Wed, Oct 02, 2013 at 03:46:42PM +0200, Stijn van Drongelen wrote:
* Operators in Eq and Ord diverge iff any of their parameters are bottom.
What's the benefit of this requirement, as opposed to, for example
False = _ = True
...
Tom
___
* Stijn van Drongelen rhym...@gmail.com [2013-10-02 15:46:42+0200]
I do think something has to be done to have an Eq and Ord with more strict
laws.
* Operators in Eq and Ord diverge iff any of their parameters are bottom.
This outlaws the Eq instances of lists, trees, and other (co)recursive
Hi Atze. I'm glad to hear that some work is going into wxHaskell. Do you
know about the issue that arose roughly 7-8 years ago that prevented
opening more than one top-level window per process? It had to do with a
change to initialization techniques, and made wxHaskell no longer useful
with GHCi.
Hi Paul. Is there a way to use GLFW with GUI elements other than OpenGL
display windows, e.g., text boxes and sliders? -- Conal
On Tue, Oct 1, 2013 at 11:23 PM, Paul Liu nine...@gmail.com wrote:
Thanks. I've just built GHC HEAD on Mac OS X Lion, and tested by
installing libraries with
On Wed, Oct 2, 2013 at 4:17 PM, Tom Ellis
tom-lists-haskell-cafe-2...@jaguarpaw.co.uk wrote:
What's the benefit of this requirement, as opposed to, for example
False = _ = True
I was trying to cover for void types, where the only sensible definitions
are
instance Eq Void where
On Wed, Oct 2, 2013 at 6:57 PM, Stijn van Drongelen rhym...@gmail.comwrote:
On Wed, Oct 2, 2013 at 5:36 PM, Roman Cheplyaka r...@ro-che.info wrote:
* Stijn van Drongelen rhym...@gmail.com [2013-10-02 15:46:42+0200]
I do think something has to be done to have an Eq and Ord with more
strict
Ryan Newton rrnew...@gmail.com writes:
Hi all,
I'm pleased to announce the release of our new parallel-programming
library, LVish:
hackage.haskell.org/package/lvish
It provides a Par monad similar to the monad-par package, but generalizes
the model to include data-structures other
On Wed, Oct 2, 2013 at 5:18 AM, Tom Ellis
tom-lists-haskell-cafe-2...@jaguarpaw.co.uk wrote:
Are there examples where application programmers would like there so be
some
f, a and b such that a == b but f a /= f b (efficiency concerns aside)? I
can't think of any obvious ones.
Yes, and we
So i think we can conclude the following
1) things are not perfect currently. But it requires some huge type class
changes to have a better story
2) certain types of data types will need to be newtyped to have instances
that play nice with Ryans concurrency work. Thats ok. Theres often good
Great to hear that we're getting some payoff for the switch to dynamic
linking in GHCi. Thanks for testing!
Cheers
Simon
On 02/10/2013 07:23, Paul Liu wrote:
Thanks. I've just built GHC HEAD on Mac OS X Lion, and tested by
installing libraries with --enable-shared and loading a GLFW program
that may or may not be a bug on the hackage server side,
just brought it to duncan's attention and put a ticket for it on trac
https://github.com/haskell/hackage-server/issues/119
On Wed, Oct 2, 2013 at 1:05 PM, Ben Gamari bgamari.f...@gmail.com wrote:
Ryan Newton rrnew...@gmail.com writes:
i mean github
On Wed, Oct 2, 2013 at 3:53 PM, Carter Schonwald carter.schonw...@gmail.com
wrote:
that may or may not be a bug on the hackage server side,
just brought it to duncan's attention and put a ticket for it on trac
https://github.com/haskell/hackage-server/issues/119
On Wed,
No. GLFW does not give you any UI elements, just basic windowing and
input handling.
Euterpea has a UI layer on top of GLFW that provides text boxes and
sliders, etc, entirely written in Haskell.
On Wed, Oct 2, 2013 at 8:40 AM, Conal Elliott co...@conal.net wrote:
Hi Paul. Is there a way to use
Newclasses are not a new vision of classes!
Not at all!
Newclasses could elegant solve several instance problems!
1) we want to have partly applied instances, like Parent2Child: Parent a
= Child a
like
instance Applicative m = Monad m where
return = pure
Hi!
Your first two cases will be fixed in 7.10, as Applicative finally becomes
a superclass of Monad. I haven't really looked at your third case, so I
can't comment on that. Your fourth case is something I'd really like to see
solved properly (*together* with a better record system), but as you
Interesting. How are the aesthetics? Can you point me to screen shots?
It'd be a lot of work, but one cool project would be to create *beautiful*
GUI elements using OpenGL programmable shaders. Given the speed of GPUs, we
could afford to put a lot into visual details.
A complementary project is
Hello everybody!
I released the third beta of Nomyx http://www.nomyx.net, the only game
where You can change the rules!
The second beta was a success.
Great players (byorgey, nomeata, Toxaris...) proposed amazing rules,
effectively building a nice universe. For example, a banking system in ecu
was
I'm pleased to make the first public announcement of the availability of
Penny, a double-entry command-line accounting system.
Penny is inspired by Ledger, an excellent program in its own right.
Ledger's websites and sales pitches are much better developed than those
for Penny, so first take a
I only managed to find some screenshots from Harley Trung's class
projects a few years ago:
https://github.com/harleyttd/keyboard-fretboard/blob/master/demo2.png
https://github.com/harleyttd/InstrVislizr/blob/master/stereo.png
It was nothing fancy, only basic widgets, single font, not
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