Daniel Fischer daniel.is.fisc...@web.de writes:
In ghci I can do
∀ :: Var - Base - Formula - Formula
∀ = All
fine. But then ghc complains. What's going on here?
Maybe your encodings aren't UTF8?
Or rather, one of them is UTF-8, and the other isn't. So that in one
case, you get the
Gregory Propf gregorypr...@yahoo.com writes:
Heh, perhaps we should petition to have a new computer key and symbol
added to the world's way of writing maths, something like maybe a
downward angled slash to mean prefix (-)
Or just use 'negate' and 'subtract'?
-k
--
If I haven't seen
On Thu, 17 Sep 2009 15:32:51 + (GMT), jean legrand
kkwwe...@yahoo.fr wrote:
Does anybody know where I can find a non-fee-based version of Paul
Hudak's paper, Conception, evolution, and application of functional
programming languages [1]? There used to be a version that did not
seems you
On Fri, Sep 18, 2009 at 4:06 AM, Ryan Ingram ryani.s...@gmail.com wrote:
I am confused about why this thread is talking about unsafePerformIO at
all. It seems like everything you all want to do can be accomplished with
the much less evil unsafeInterleaveIO instead. (Which is still a bit evil;
On Fri, Sep 18, 2009 at 5:15 AM, Daniel Fischer
daniel.is.fisc...@web.de wrote:
...
But that does something completely different from what Cristiano wants to do.
He wants to read many files files quasi-parallel.
As far as I can tell, he needs to read a small chunk from the beginning of
every
I wish to thank Cafè's people for their great support in understanding Haskell.
Thank you all!
Cristiano
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Ketil Malde ke...@malde.org writes:
Gregory Propf gregorypr...@yahoo.com writes:
Heh, perhaps we should petition to have a new computer key and symbol
added to the world's way of writing maths, something like maybe a
downward angled slash to mean prefix (-)
Or just use 'negate' and
On 18 Sep 2009, at 04:32, Gregory Propf wrote:
Heh, perhaps we should petition to have a new computer key and
symbol added to the world's way of writing maths, something like
maybe a downward angled slash to mean prefix (-)
Such a symbol already exists, but isn't in the ASCII set:
(-)
I would also like to see a solution for problems like these.
Haskell provides a lot of nice memoizing / caching data structures -
like a trie - but the ones I know indeed keep growing, so no garbage
collection takes place?
It would be nice to have a data structure that performs caching but
does
Hi Daniel,
Prelude Data.Char.isSymbol (toEnum 8704)
True
On Thu, Sep 17, 2009 at 11:09 PM, Daniel Fischer
daniel.is.fisc...@web.dewrote:
Am Friday 18 September 2009 04:41:13 schrieben Sie:
Weird. OK, thanks a lot! I'm switching to ¥ until I get this figured
out. Sean
What does your
Yeah it seems like the general solution to the problem would be some sort of
map-like datastructure that you add items via a key/value pair, and if the
key gets GC'd, that entry gets removed from the structure.
I've been wanting something like this as well, but didn't know about weak
references
Hey it works :D
Here is a proof of concept:
http://gist.github.com/189104
Maybe later today I'll try to make a version that can be safely used outside
IO.
- Job
On Fri, Sep 18, 2009 at 10:19 AM, Job Vranish jvran...@gmail.com wrote:
Yeah it seems like the general solution to the problem
Yeah linking in windows is _very_ slow. Supposedly this is because the
linker forks a lot of processes. In linux this is fine as forking is dirt
cheap, but in windows (at least older versions, not completely sure about
vista or 7) forking is expensive.
Building a Qt app on my EEE in linux only
Snouser wrote:
I need to generate a random string from 1 to 30.
This is the parts I've done so far.
unikString xs | let x = unsafePerformIO (randomRIO (1,30)) elem x xs = x :
unikString xs
| otherwise = unikString xs
How do I proceed?
I need the
I actually meant it as sort of a joke but maybe it's not after all. Among the
many benefits, think of all the delightful conspiracy theories such a change
would spawn - even our math isn't safe now!, Save the minus sign!.
--- On Fri, 9/18/09, Jon Fairbairn jon.fairba...@cl.cam.ac.uk wrote:
Hi Marcus,
Thanks for your suggestions. I'm a Windows user so aren't really
qualified to comment on these suggestions - it depends what Posix
users would like. I suggest you follow the Library Submission Process
- filepath is now a core library, and as such I don't have the
freedom/power to
Hello
I run into problems with new binary package. Following function reads a list
of elements one by one until end of stream. List is very long (won't fit into
memory).
In binary-0.5.0.1 and earlier it read list lazily. Now it seems that it tries
to read whole list to memory. Program does
Hello Neil,
Thanks for the pointer Neil. I will read the site. Besides,
it allows me to submit a fixed version since I just found a bug!
Cheers,
- Marcus
P.S. 452 black box tests of my little command utility, and I
still forgot about a corner case. Now there are 454 black box
test cases :).
I'm trying to use newArray to allocate something that has 100M unboxed
doubles. It takes quite a few seconds to do so on GHC 6.10.2. But
doing the same thing (and initialize all to 0) in C returns
immediately. Setting RTS heap size doesn't help. Does anybody happen
to know why?
--
Regards,
Paul
ninegua:
I'm trying to use newArray to allocate something that has 100M unboxed
doubles. It takes quite a few seconds to do so on GHC 6.10.2. But
doing the same thing (and initialize all to 0) in C returns
immediately. Setting RTS heap size doesn't help. Does anybody happen
to know why?
Use
wow, using newArray_ and initialize the whole thing myself is much
faster than newArray. But why?
On 9/18/09, Don Stewart d...@galois.com wrote:
ninegua:
I'm trying to use newArray to allocate something that has 100M unboxed
doubles. It takes quite a few seconds to do so on GHC 6.10.2. But
Hey all,
Yi has a lot of dependencies that currently make it a pain to install
on Windows, so I'm wondering which of those can be streamlined for
easier install on Windows. So far, I haven't succeeded at getting them
to work on my own machine, and I've already spent a lot of time on it.
The
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