Hi,
For example, I have this:
list1 = [a, b, c]
list2 = [d, e, f]
list3 = [g, h, i]
Now I want:
[ [(a, d, g), (b, e, h), (c, f, i)]
, ... ] -- a list that contains all the combinations.
How to do it pretty? Thanks.
--
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山高哪阻野云飞
___
All I could get is to use permutations and concatMap. But it looks really ugly.
On Fri, Mar 12, 2010 at 2:09 PM, Casey Hawthorne cas...@istar.ca wrote:
This sounds like homework.
Think in abstract terms what you want to accomplish.
Start with the simplest case first, usually the base case.
Sorry, I did not make it clear, since I did not know how to say this
in technical terms.
With comprehension, I could get all the possibilities that draw one
elem from each list and put them together. But consider this: for
example, there are two types of pet, dog and cat. And there are two
I realized I fell into the trap of wrong way. Thank you.
On Fri, Mar 12, 2010 at 4:16 PM, Ketil Malde ke...@malde.org wrote:
Casey Hawthorne cas...@istar.ca writes:
For example, I have this:
list1 = [a, b, c]
list2 = [d, e, f]
list3 = [g, h, i]
Think in abstract terms what you want to
Oh, that is not a precondition. So the answer of yours are correct. I
am working on permutations. I used it in a wrong way.
On Mon, Mar 15, 2010 at 4:39 PM, Daniel Fischer
daniel.is.fisc...@web.de wrote:
Am Montag 15 März 2010 08:37:20 schrieb Magicloud Magiclouds:
Sorry, I did not make
Hi, I have code as below. How come case version works wrong and
gives me overlap compiling warning? Thanks.
if dayOfMonth == firstDayOfMonth
then v day (x, y)
else if dayOfMonth == lastDayOfMonth
then not_ $ v day (x, y)
else Mider day (x, y)
case dayOfMonth of
On Thu, Apr 29, 2010 at 1:51 AM, Henning Thielemann
schlepp...@henning-thielemann.de wrote:
minh thu schrieb:
2010/4/28 Magicloud Magiclouds magicloud.magiclo...@gmail.com:
Hi, I have code as below. How come case version works wrong and
gives me overlap compiling warning? Thanks.
if dayOfMonth
Hi,
I have a file including some operation logs, in the format of the
following. And I have some code to analyze it. Well, it ate all my
memories.
---
log:
Log for item A
===
09:10 read accountA
09:20 read accountB
Log for item B
---
code:
file - U.readFile filename
mapM_
U is for UTF8 module. And I will try the modules you mentioned.
Although I thought Haskell IO is lazy enough
On Tue, May 25, 2010 at 9:46 AM, Ivan Miljenovic
ivan.miljeno...@gmail.com wrote:
On 25 May 2010 11:41, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
I have
Miljenovic
ivan.miljeno...@gmail.com wrote:
On 25 May 2010 12:02, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
U is for UTF8 module. And I will try the modules you mentioned.
Although I thought Haskell IO is lazy enough
If you're only streaming data, it probably would
Hi, I have met similar problem before, and I do not know what to do.
# cabal install --reinstall gtk2hs-buildtools
Resolving dependencies...
Configuring gtk2hs-buildtools-0.9...
cabal: alex is required but it could not be found.
cabal: Error: some packages failed to install:
gtk2hs-buildtools-0.9
I only have one alex installed under ~/.cabal/bin.
It seems working with shell environment, but not cabal.
On Thu, May 27, 2010 at 1:40 PM, Axel Simon axel.si...@in.tum.de wrote:
Hi Magicloud,
On May 27, 2010, at 4:11, Magicloud Magiclouds wrote:
Hi, I have met similar problem before, and I
That might be it. However, I linked ~/.cabal/bin/* to
/usr/local/bin And it worked.
On Thu, May 27, 2010 at 3:24 PM, Ivan Miljenovic
ivan.miljeno...@gmail.com wrote:
On 27 May 2010 16:46, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
I only have one alex installed under
: Tue, Jun 8, 2010 at 7:15 PM
Subject: Re: [Gtk2hs-users] Installation problem with cairo.
To: Magicloud Magiclouds magicloud.magiclo...@gmail.com
Cc: gtk2hs-users gtk2hs-us...@lists.sourceforge.net
Hi again,
it's very difficult for me to say what is happening. Could you ask on
the cabal mailing list
Hello,
I am getting familiar with FP now, and I have a program design kind of
question.
Say I have something like this in C:
static int old;
int diff (int now) { /* this would be called once a second */
int ret = now - old;
old = now;
return ret;
}
Because there is no variable in
Hi,
I am trying to use NetSnmp to get some information from my switch.
And I met this problem.
After initialize, I used snmpWalk to get some information, and
dealed with it. Everything is fine. Then I sleep for 5 mins. SnmpWalk
again. But this time, all asnValues were unsupported format, which
Hi,
The box is just 32bit with linux. But anyway, I will try out the
update. Thanks.
On Thu, Oct 22, 2009 at 11:35 PM, John Dorsey hask...@colquitt.org wrote:
I am trying to use NetSnmp to get some information from my switch.
And I met this problem.
After initialize, I used snmpWalk to
It works pretty well.
On Fri, Oct 23, 2009 at 7:24 AM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
The box is just 32bit with linux. But anyway, I will try out the
update. Thanks.
On Thu, Oct 22, 2009 at 11:35 PM, John Dorsey hask...@colquitt.org wrote:
I am trying
Hi,
As we know, CST could mean both +8 or -6 time zone. So I got a problem.
In the same envoironment. When a ZonedTime is shown, I got x
CST. Now it means +8 time zone. Then I read it, stupidly, it turns
into -6 time zone.
How could I fix this? I am using ghc 6.10.4 in rhel 5.
--
Hi,
In case of this:
case bala of
[ bala
, bala
, bala ] - bala bala bala
_ - bala
ghc 6.10.4 would fail to compile, because of the wrong indent of
line , bala.
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Ah, I see.
The reason I have to use my style is the same as others: the list is
too long
On Mon, Oct 26, 2009 at 11:27 AM, Daniel Fischer
daniel.is.fisc...@web.de wrote:
Am Montag 26 Oktober 2009 03:39:13 schrieb Magicloud Magiclouds:
Hi,
In case of this:
case bala of
[ bala
Hi,
I think when people talk about OOP, especially the inheriting, their
focus mainly is on functions (methods).
My concern here is about the data member inheriting. In OOP, when I
inherit a class, I also got the members of it. But in haskell, how to
inherit a data?
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On this subject, I think, any content inherit would lead to trouble
somehow. But is that the reason that we should totally cut them loose?
I mean the way of programming developing is easier making (writing),
easier maintaining. In fact, I think this is a fork in front of me:
Before any new
Somehow, I agree with you.
I think inherit is not evil, the people use it wrong is. The problem
here is, inherit is naked right now. So people could use it wrong.
On Fri, Oct 30, 2009 at 7:42 PM, Yaakov Nemoy loupgaroubl...@gmail.com wrote:
2009/10/30 Peter Verswyvelen bugf...@gmail.com:
The
...@btinternet.com:
Rogan Creswick wrote:
On Thu, Oct 29, 2009 at 6:54 PM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
My concern here is about the data member inheriting. In OOP, when I
inherit a class, I also got the members of it. But in haskell, how to
inherit a data
at 9:57 AM, Gregory Collins g...@gregorycollins.net wrote:
Tom Davie tom.da...@gmail.com writes:
On 10/31/09, Magicloud Magiclouds magicloud.magiclo...@gmail.com wrote:
After all, I never think OO as an oppsite way to all other things. The
idea is so general that if you say I cannot use
Hi,
Say I have something like this:
[ Record { item = A1, value = 0 }
, Record { item = B1, value = 13 }
, Record { item = A2, value = 2 }
, Record { item = B2, value = 10 } ]
How to convert it into:
[ XXInfo { name = A, value1 = 0, value2 = 2 }
, XXInfo { name = B, value1 = 13, value2 = 10 }
Hi,
Today, when I compiled gtk2hs, I got this:
cairo/Graphics/Rendering/Cairo.hs.pp:264:0:
Failed to load interface for `Data.Array.Base':
it is a member of the hidden package `array-0.2.0.0'
Use -v to see a list of the files searched for.
As usual, I searched for the
No, it is not. I used configure/make way.
Well I just noticed that there is a hide-all-package options to ghc.
I do not know why. Maybe the author went crazy.
On Thu, Nov 12, 2009 at 5:09 PM, Magnus Therning mag...@therning.org wrote:
On Thu, Nov 12, 2009 at 7:32 AM, Magicloud Magiclouds
, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
No, it is not. I used configure/make way.
Well I just noticed that there is a hide-all-package options to ghc.
I do not know why. Maybe the author went crazy.
Chances are the auther DIDN'T go crazy :-)
It's a common practice to hide
Hi,
I have looked the concept of monoid and something related, but
still, I do not know why we use it?
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helped!
Regards,
Rafael
On Fri, Nov 13, 2009 at 14:14, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
I have looked the concept of monoid and something related, but
still, I do not know why we use it?
--
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That is OK. Since understand the basic concept of monoid (I mean the
thing in actual math), the idea here is totally not hard for me. But
the sample here does not show why (or how) we use it in programming,
right?
On Sat, Nov 14, 2009 at 12:48 AM, Stephen Tetley
stephen.tet...@gmail.com wrote:
)
- ...
2009/11/13 Magicloud Magiclouds magicloud.magiclo...@gmail.com:
Hi,
I have looked the concept of monoid and something related, but
still, I do not know why we use it?
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It is a great example, shows both howto and benefits. Thanks.
2009/11/14 Maurício CA mauricio.antu...@gmail.com:
I have looked the concept of monoid and something related, but
still, I do not know why we use it?
I don't know if it's a good example, but it's simple. This
package I wrote
A is just a newtype for A - A.
More simply, dualization is flipping the binary operation, and the
endo monoid is the monoid of functions a-a with composition.
2009/11/13 Magicloud Magiclouds magicloud.magiclo...@gmail.com:
I see. Then what is about Dual and Endo? Especially Endo, I completely
Hi,
I am warping some C libs. In one function, I do this:
183 allocaBytes bufLen $ \buf - do
184ret - {# call buf_read #}
185 bluh
186 bala
187 buf
188 bufLen
189if ret 0
190 then userError bufRead error
191 else -- what should I do here?
I am thinking
Hi,
Today I found out that I cannot access hackage.haskell.org. I have
tried vpn/proxy to see if my network has something wrong. No luck.
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Hi,
For example, I have a data A defined. Then I want to add (+) and (-)
operators to it, as a sugar (compared to addA/minusA). But * or other
stuff defined in class Num is meanless to A. So I just do:
(+) :: A - A - A
(+) a b =
A (elem1 a + elem1 b) (elem2 a + elem2 b) -- I got errors here,
Hi,
In System.Posix.IOCtl, there is such a class:
class Storable d = IOControl req d | req - d where
ioctlReqSource :: req - CInt
How to instance it? I do it as:
data TIOCGWINSZ = TIOCGWINSZ
#starttype struct winsize
#field ws_row , CUShort
#field ws_col , CUShort
#field ws_xpixel , CUShort
Hi,
Formerly, I had IORef and some state monad to do the task of keeping states.
Now in haskell 2010, I cannot find anything about it. Do I have to
use ghc base package for this function?
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On Wed, Dec 8, 2010 at 6:46 PM, Henk-Jan van Tuyl hjgt...@chello.nl wrote:
On Wed, 08 Dec 2010 10:03:40 +0100, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
Formerly, I had IORef and some state monad to do the task of keeping
states.
Now in haskell 2010, I cannot find
Hi,
I see this kind of information a lot when I using cabal to install
package. Or sometimes same packages both exist in global and user
space, which is a shadowed by message.
How to resolve that? Thanks.
Resolving dependencies...
command line: cannot satisfy -package Cabal-1.10.0.0:
On Thu, Dec 16, 2010 at 10:55 AM, Ivan Lazar Miljenovic
ivan.miljeno...@gmail.com wrote:
On 16 December 2010 13:35, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
I see this kind of information a lot when I using cabal to install
package. Or sometimes same packages both exist
On Thu, Dec 16, 2010 at 2:24 PM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
On Thu, Dec 16, 2010 at 10:55 AM, Ivan Lazar Miljenovic
ivan.miljeno...@gmail.com wrote:
On 16 December 2010 13:35, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
I see this kind
On Thu, Dec 16, 2010 at 2:59 PM, Ivan Lazar Miljenovic
ivan.miljeno...@gmail.com wrote:
On 16 December 2010 17:26, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
And, sure, I could reinstall Cabal. Then things seem fine. But it is
weird. I have to have the same packages installed
On Thu, Dec 16, 2010 at 3:48 PM, Ivan Lazar Miljenovic
ivan.miljeno...@gmail.com wrote:
On 16 December 2010 18:30, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
On Thu, Dec 16, 2010 at 2:59 PM, Ivan Lazar Miljenovic
For example, now I have message as this when installing darcs
On Thu, Dec 16, 2010 at 3:56 PM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
On Thu, Dec 16, 2010 at 3:48 PM, Ivan Lazar Miljenovic
ivan.miljeno...@gmail.com wrote:
On 16 December 2010 18:30, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
On Thu, Dec 16, 2010 at 2
On Thu, Dec 16, 2010 at 4:07 PM, Ivan Lazar Miljenovic
ivan.miljeno...@gmail.com wrote:
On 16 December 2010 19:06, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Oh, clean job around ~/.ghc and ~/.cabal has been done. No luck.
Sounds like a dodgy GHC install then; I believe lispy
Hi,
I am trying to make happstack work in my box, which is using ghc 7.
While compiling HStringTemplate, which I did a little modification
to make it work, I found that it does not work with
template-haskell-2.5.0.0. I changed it to use
template-haskell-2.4.0.1. This step worked fine.
Then I
? What error were you getting?
Antoine
On Thu, Dec 16, 2010 at 6:23 AM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
I am trying to make happstack work in my box, which is using ghc 7.
While compiling HStringTemplate, which I did a little modification
to make it work, I
is now on Hackage, and should work properly with ghc 7,
I think.
Cheers,
Sterl.
On Dec 16, 2010, at 6:21 PM, Magicloud Magiclouds wrote:
On Thu, Dec 16, 2010 at 9:15 PM, Antoine Latter aslat...@gmail.com wrote:
Hi there,
The only version of template haskell which will work is the version
Hi,
When I compiling happstack with ghc 7, I got an error:
src/Happstack/Server/Internal/Handler.hs:29:8:
Could not find module `NoPush':
Use -v to see a list of the files searched for.
I looked around, there is no clue for the module NoPush, except it
has a function call withNoPush.
that :(
- jeremy
On Dec 16, 2010, at 8:02 PM, Magicloud Magiclouds wrote:
Hi,
When I compiling happstack with ghc 7, I got an error:
src/Happstack/Server/Internal/Handler.hs:29:8:
Could not find module `NoPush':
Use -v to see a list of the files searched for.
I looked around
Hi,
Recently, I am reading ssh hackage
(http://hackage.haskell.org/package/ssh). When at the part of deal
with string, I got confused. I am not sure if this is a bug for the
hackage, or I am just misunderstanding.
An ascii char takes a Word8. So this works (LBS stands for
On Thu, Dec 23, 2010 at 2:01 PM, Mark Lentczner ma...@glyphic.com wrote:
On Dec 22, 2010, at 9:29 PM, Magicloud Magiclouds wrote:
Thus under all situation (ascii, UTF-8, or even
UTF-32), my program always send 4 bytes through the network. Is that
OK?
Generally, no.
Haskell strings
:
On 23 December 2010 05:29, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
If so, OK, then I think I could make a packInt which turns an Int
into 4 Word8 first. Thus under all situation (ascii, UTF-8, or even
UTF-32), my program always send 4 bytes through the network. Is that
OK?
I
useful than a ByteString for almost all purposes. If I allready
had a ByteString, the only reason I would want to convert it to a
CString is to call a C function.
Take care,
Antoine
On Sun, Dec 26, 2010 at 7:40 PM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Thanks for the ideas
Hi,
From another thread in this list, I got code as:
instance MonadIO Identity where
liftIO = id
Well, it does not work for me as:
Message.hs:22:12:
Couldn't match expected type `Identity a' with actual type `IO a'
Expected type: IO a - Identity a
Actual type: IO a - IO a
...@snoyman.com:
The only way to create such an instance would be with unsafePerformIO,
which in this case would be a Very Bad Idea (tm).
Michael
On Tue, Dec 28, 2010 at 7:29 AM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
From another thread in this list, I got code
none
of these types involve IO, then liftIO can't be used.
Antoine
On Tue, Dec 28, 2010 at 12:47 AM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Ah, that is a bad news.
I am using Control.Monad.Writer and Data.Encoding. Code like (not
compilable)
43|instance WithMessage
Hi,
In Haskell's way, normally, we write:
if condition then
expression_true
else
expression_false
But I just heard that, in fancy way, we could do:
do
ifNeedToDo doIt
bluh
May I have any clue here?
--
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Hi,
I am using Data.Binary which defined instance Binary a = Binary
[a]. Now I need to define instance Binary [String] to make
something special for string list.
How to make it work? I looked into the chapter of
overlappinginstances, nothing works.
--
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Steffen Schuldenzucker:
Sure. GHC would prompt that.
Jasper Van der Jeugt:
Not working with ghc7. But there sure are some threads about this
kind of things. I do not know if this is a bug of 6.* or 7, either.
Luke Palmer:
Sorry, by special, I meant, for example, [a, b] will be ab by
at the source for the instances of the 'Binary' class
for inspiration!
Take care,
Antoine
On Wed, Jan 5, 2011 at 2:24 AM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
I am using Data.Binary which defined instance Binary a = Binary
[a]. Now I need to define instance Binary
Hi,
Originally, my idea for networking programming is like: read some
bytes, judge if this is enough for a packet (defined in certain
protocol), if not, read more until the packet is complete, then parse
it into a message.
Now we have lazy in Haskell. Can I do it as:
buffer - hGetContents
Hi,
Documents said that DiffTime could treat as how many seconds. So
how to convert it to a number of seconds?
Thanks.
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Ah, floor $ toRational dt.
On Mon, Jun 8, 2009 at 1:09 PM, Magicloud
Magicloudsmagicloud.magiclo...@gmail.com wrote:
Hi,
Documents said that DiffTime could treat as how many seconds. So
how to convert it to a number of seconds?
Thanks.
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Hi,
I am learning to use cabal for my code.
Just when I start, I met a question, is there an easy way to find
out what packages my code depends?
Thanks.
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Hi,
I use gtk2hs in linux. Well, I have no idea how to install gtk2hs by
cabal, but my program needs it, and I want my program cabalized. So
how to do this?
Thanks.
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Hi,
I am learning it following the very few documents on its site. Well,
I failed, with the import modules, I still cannot compile it. The
error is on T.*.
6 import Database.HaskellDB.HDBC.SQLite3
7 import Database.HaskellDB
8 import Database.HaskellDB.DBSpec
9 import
I changed it, some other problem occured.
1. How to compare a BoolT column to a True? t!c .. True could not work.
2. What shoud I use after !? Like table!col, recordset!col, what is col?
Thanks.
On Fri, Jun 19, 2009 at 1:24 PM, Magicloud
Magicloudsmagicloud.magiclo...@gmail.com wrote:
Hi,
I am
Hi,
I am using haskelldb and haskelldb-hdbc-sqlite3. Well, I finally got
the source compiled and ran, I got this error:
App: user error (SQL error: SqlError {seState = , seNativeError =
21, seErrorMsg = prepare 74: SELECT subject,\n timestamp\nFROM
notes as T1\nORDER BY timestamp DESC:
This is the weird code, please see line 61.
20 cpuNew :: IO CPU
21 cpuNew = do
22 self - meterNew
23 usage - newIORef $ CPUusage 0 0 0 0 0 0 0 0
24 self `on` realize $ do
25 forkIO $ redraw self usage
33 return ()
34 return self
35 where
56 redraw self usage = do
57
Hi,
Read often throws runtime errors, which breaks the robust of the
problem. How to deal with it? Without lost too much proformance (so
reads is a no).
At least, if its error could be catched, that'd be better.
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Hi,
In many language, both thread and process are supported. But in
haskell's document, the only thing I could find called fork is to make
a thread. So how to fork the program itself, like fork () in C?
Thanks.
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Hi,
I am trying to use Data.Binary with ProcessID. Well, how to convert
between CPid and Word32?
Thanks.
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Hi,
There are times, when we need to make some system calls, or call C
library. So we have to deal with C data types.
For example, CPid, which is an integer, actually. So we can do
fromIntegral pid. Then why do not we define type CPid = Integer,
and convert Haskell Integer with C Int
need to convert, convert, convert.
And, let say using Integer for pid is insane. Then if I do not convert
it into Integer, when serialised, I have to point out with
Word32/Word64, which is definitely bad.
On Tue, Jun 30, 2009 at 11:01 AM, Ahn, Ki Yungkya...@gmail.com wrote:
Magicloud Magiclouds 쓴
That is true. But I think we could avoid (or resolve) the problem of
wrong type thing in other ways, or we just resolve one thing by typing
much more code.
On Tue, Jun 30, 2009 at 11:37 AM, Jason Dagitda...@codersbase.com wrote:
On Mon, Jun 29, 2009 at 7:01 PM, Magicloud Magiclouds
Hi,
I thought class was for this purpose. But it turns out not.
Code as following could not compiled.
1 main = do
2 mapM_ (\(x, y, widget) - do
3a - widgetRun widget
4putStrLn $ show a
5 ) widgetList
6
7 widgetList :: (Widget w) = [(Integer, Integer, w)]
8
: ++)) ]
Before, without existential quantification, you had to have all the same
type of widget (e.g. all Button or all Label)
Hope this makes it more clear.
-Ross
On Jul 3, 2009, at 12:00 AM, Magicloud Magiclouds wrote:
Hi,
I thought class was for this purpose. But it turns out not.
Code
Hi,
The following code failed to compiled, with error:
Attribute.hs:46:91:
Couldn't match expected type `[t]'
against inferred type `(a, String)'
In the expression: (color_, rest_)
In a case alternative: [(color_, rest_)] - (color_, rest_)
In the expression:
Hum I must lost my mind
Thank you.
On Mon, Jul 13, 2009 at 3:33 PM, Ketil Maldeke...@malde.org wrote:
Magicloud Magiclouds magicloud.magiclo...@gmail.com writes:
43 instance Read Attribute where
44 readsPrec _ str = [ (mkAttr attr_ color, rest) | (attr_, rest1) - lex
str
45
Hi,
I have a data structure, which shows like this: AttrBgColor {bgColor
= Color 0 0 0}
And the following is my Read code. But it failed parsing
31 instance Read Attribute where
32 readsPrec _ str = [ (mkAttr attr_ color, rest) | (attr_, rest1) - lex str
33
Hi,
I do not notice this before. fun ([0, 1] ++ xs) = .. in my code
could not be compiled, parse error.
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Hi,
Although I have used dbus with ruby a little, but still, I do not
understand hdbus's APIs
Is there any sample that I could learn? Thanks.
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Hi,
Code like:
(or_, ow_) - createPipe
or - fdToHandle or_
ow - fdToHandle ow_
hSetBuffering ow LineBuffering
hSetBuffering or LineBuffering
h - runProcess cmd [] Nothing Nothing Nothing (Just ow) Nothing
In the cmd process, the ow is not LineBuffering
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Hi,
I am trying out existential type, some sample code works well. Well,
my own code could not be compiled with message:
Grid.hs:45:11:
Kind error: `GridWidget' is applied to too many type arguments
In the type `GridWidget widget'
In the type `(GridWidget widget) - (widget - t) - t'
Hi,
I want to make a binding of a gtk function, which returns a X11 type.
gtk2hs is made by c2hs, which is OK to give me the .chi file. Well,
X11 is not. So if I make my binding c2hs style, I have to make a .chi
file for X11 myself.
How to do it?
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Thank you all guys. This explained so much.
On Sun, Sep 6, 2009 at 2:53 AM, Ryan Ingramryani.s...@gmail.com wrote:
On Thu, Sep 3, 2009 at 11:05 PM, Magicloud
Magicloudsmagicloud.magiclo...@gmail.com wrote:
data GridWidget = forall widget. (WidgetClass widget) = GridWidget widget
liftGW ::
Hum, seems like the c2hs in gtk2hs is a non-standard version, and the
chi it gives could not be used by c2hs (nor can standard c2hs used in
gtk2hs's compiling)
On Mon, Sep 7, 2009 at 4:45 PM, Magicloud
Magicloudsmagicloud.magiclo...@gmail.com wrote:
Hi,
I want to make a binding of a gtk
Hi,
In other weak-type language, `round i == i` would work. But in
haskell, what should I do? Thanks.
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Hi,
Here is an example:
let l = fun num in
if isIntegral l
then l
else 0
How to do the isIntegral thing?
On Tue, Sep 29, 2009 at 1:58 PM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
Hi,
In other weak-type language, `round i == i` would work. But in
haskell, what
It never matches to (_, 0.0)
I mean
case properFraction l of
(_, 0) - l
_ - 0 -- always goes here.
On Tue, Sep 29, 2009 at 2:18 PM, Jimmy Hartzell j...@shareyourgifts.net wrote:
Use properFraction:
http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v%3AproperFraction
, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
It never matches to (_, 0.0)
I mean
case properFraction l of
(_, 0) - l
_ - 0 -- always goes here.
Odd, it works fine for me.
f x =
case properFraction x of
(_,0) - True
_ - False
*Main
, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
The original code is
givenSum num = map (\a -
let l = (sqrt $ fromIntegral (a * a + 2 + 2 *
num)) - (fromIntegral a) in
case properFraction l of
(_, 0
wrote:
On Mon, Sep 28, 2009 at 11:35 PM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
It never matches to (_, 0.0)
I mean
case properFraction l of
(_, 0) - l
_ - 0 -- always goes here.
Odd, it works fine for me.
f x =
case properFraction x of
(_,0
thomas.dubuis...@gmail.com wrote:
On Mon, Sep 28, 2009 at 11:35 PM, Magicloud Magiclouds
magicloud.magiclo...@gmail.com wrote:
It never matches to (_, 0.0)
I mean
case properFraction l of
(_, 0) - l
_ - 0 -- always goes here.
Odd, it works fine for me.
f x =
case
Hi,
I always see a file named vte something in doc folder, but I never see
vte in reference or source.
So I wonder if gtk2hs actually supports VTE. And I'd like to have that
supporting
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