On 1/22/08, Ian Lynagh [EMAIL PROTECTED] wrote:
On Tue, Jan 22, 2008 at 03:59:24PM +, Magnus Therning wrote:
Yes, of course, stupid me. But it is still the UTF-8 representation of
ö,
not Latin-1, and this brings me back to my original question, is this an
intentional change in 6.8?
Peter Verswyvelen [EMAIL PROTECTED] writes:
Prelude Data.Char map ord ö
[195,182]
Prelude Data.Char length ö
2
there are actually 2 bytes there, but your terminal is showing them as
one character.
So let's all switch to unicode ASAP and leave that horrible
multi-byte-string-thing behind
Wolfgang Jeltsch wrote:
Covering reactive programming would indeed be interesting.
I want to add that there is no single way for doing reactive programming in
Haskell. There is Conal’s stuff, there is Yampa and there is “my” stuff
(Grapefruit [1]) whereby the pros and cons of these
Ketil Malde wrote:
So let's all switch to unicode ASAP and leave that horrible
multi-byte-string-thing behind us?
You are being ironic, I take it?
No I just used wrong terminology. When I said unicode, I actually meant
UCS-x, and with multi-byte-string-thing I meant VARIABLE-length,
Achim Schneider [EMAIL PROTECTED] writes:
Just out of curiosity: how do you plan to find out server locations
(beyond the obvious top-level domain - country heuristics)?
$ whois ip | grep Country
Some also have location in the TXT field in DNS (Sometimes called an
ICBM record). I think
Peter Verswyvelen wrote:
Now I'm getting a bit confused here. To summarize, what encoding does
GHC 6.8.2 use for [Char]? UCS-32?
How dare you! Such a personal question! This is none of your business.
I jest, but the point is sound: the internal storage of Char is ghc's
business, and it
Peter Verswyvelen [EMAIL PROTECTED] writes:
No I just used wrong terminology. When I said unicode, I actually meant UCS-x,
You might as well say UCS-4, nobody uses UCS-2 anymore. It's been
replaced by UTF-16, which gives you the complexity of UTF-8 without
being compact (for 99% of existing
On Jan 23, 2008 11:56 AM, Jules Bean [EMAIL PROTECTED] wrote:
Peter Verswyvelen wrote:
Now I'm getting a bit confused here. To summarize, what encoding does
GHC 6.8.2 use for [Char]? UCS-32?
[snip]
What *does* matter to the programmer is what encodings putStr and
getLine use. AFAIK,
Johan Tibell wrote:
On Jan 23, 2008 11:56 AM, Jules Bean [EMAIL PROTECTED] wrote:
Peter Verswyvelen wrote:
Now I'm getting a bit confused here. To summarize, what encoding does
GHC 6.8.2 use for [Char]? UCS-32?
[snip]
What *does* matter to the programmer is what encodings putStr and
getLine
On Jan 23, 2008 12:13 PM, Jules Bean [EMAIL PROTECTED] wrote:
Presumably there wasn't a sufficiently good answer available in time for
haskell98.
Will there be one for haskell prime ?
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What *does* matter to the programmer is what encodings putStr and
getLine use. AFAIK, they use lower 8 bits of unicode code point which
is almost functionally equivalent to latin-1.
Which is terrible! You should have to be explicit about what encoding
you expect. Python 3000
Johan Tibell wrote:
What *does* matter to the programmer is what encodings putStr and
getLine use. AFAIK, they use lower 8 bits of unicode code point which
is almost functionally equivalent to latin-1.
Which is terrible! You should have to be explicit about what encoding
you expect. Python 3000
Ben Franksen wrote:
Just out of curiosity: how do you plan to find out server locations
(beyond the obvious top-level domain - country heuristics)?
Achim Schneider wrote:
$ whois ip | grep Country
Ketil Malde wrote:
Some also have location in the TXT field in DNS (Sometimes called an
ICBM
The benefit would be that if the input is not in latin-1 an exception
could be thrown rather than returning a Char representing the wrong
Unicode code point.
I'm not sure what you mean here. All 256 possible values have a meaning.
You're of course right. So we don't have a problem here.
On 1/23/08, Johan Tibell [EMAIL PROTECTED] wrote:
[..]
My proposal is for I/O functions to specify the encoding they use if
they accept or return Chars (and Strings). If they deal in terms of
bytes (e.g. socket functions) they should accept and return Word8s.
Optionally, text I/O functions
Friends
Over the next few months I'm giving two or three talks to groups of *non*
functional programmers about why functional programming is interesting and
important. If you like, it's the same general goal as John Hughes's famous
paper Why functional programming matters.
Audience: some are
Simon Peyton-Jones wrote:
Friends
Over the next few months I'm giving two or three talks to groups of *non*
functional programmers about why functional programming is interesting and
important. If you like, it's the same general goal as John Hughes's famous
paper Why functional
Johan Tibell wrote:
What *does* matter to the programmer is what encodings putStr and
getLine use. AFAIK, they use lower 8 bits of unicode code point which
is almost functionally equivalent to latin-1.
Which is terrible! You should have to be explicit about what encoding
you expect.
On Wed, Jan 23, 2008 at 09:59:29AM +0300, Bulat Ziganshin wrote:
Hello David,
Tuesday, January 22, 2008, 11:43:44 PM, you wrote:
The third prerelease features (apart from numerous bug and performance
regression fixes) a completely rewritten rollback command and new
progress-reporting
Johan Tibell [EMAIL PROTECTED] writes:
The benefit would be that if the input is not in latin-1 an exception
could be thrown rather than returning a Char representing the wrong
Unicode code point.
I'm not sure what you mean here. All 256 possible values have a meaning.
OTOH, going the other
We are pleased to announce the release of Harpy 0.4, a library for
runtime code generation for x86 machine code.
Harpy is available from Hackage:
http://hackage.haskell.org/cgi-bin/hackage-scripts/package/harpy-0.4
Also see Harpy's homepage, which features two tutorials and access to
the
On Jan 23, 2008 2:11 PM, Magnus Therning [EMAIL PROTECTED] wrote:
Yes, this reflects my recent experience, Char is not a good representation
for an 8-bit byte. This thread came out of my attempt to add a module to
dataenc[1] that would make base64-string[2] obsolete. As you probably can
On Wed, 23 Jan 2008, Simon Peyton-Jones wrote:
1. Small examples of actual code. The goal here is (a) to convey a
visceral idea of what functional programming *is*, rather than just
assume the audience knows (they don't), and (b) to convey an idea of why
it might be good. One of my
David Roundy wrote:
We are happy to announce the third prerelease version of darcs 2! Darcs 2
features numerous improvements, and it seems that we have fixed most of the
regressions, so we're looking for help, from users willing to try this
release out. Read below, to see how you can benefit
On Wed, 2008-01-23 at 13:29 +, Simon Peyton-Jones wrote:
1. Small examples of actual code. The goal here is (a) to convey a
visceral idea of what functional programming *is*, rather than just
assume the audience knows (they don't), and (b) to convey an idea of
why it might be good.
Hello,
On Wed, Jan 23, 2008 at 03:26:51PM +, Simon Marlow wrote:
David Roundy wrote:
We are happy to announce the third prerelease version of darcs 2! Darcs 2
features numerous improvements, and it seems that we have fixed most of the
regressions, so we're looking for help, from users willing
Hello All,
There is now an appendix to the Gtk2Hs tutorial on getting started with
Cairo drawing. It's not actually about drawing, but on how to get
drawings on the screen and how to write them to .png, .pdf, .ps. or .svg
files. Though this is very easy, the 'recipes' are not self-evident, so
Hi, friends,
I've built GHC from darcs, and...
Could anybody tell me, what's the purpose of Arrow[1] not having `'
method?
1. http://darcs.haskell.org/packages/base/Control/Arrow.hs
$ ghci
GHCi, version 6.9.20080104: http://www.haskell.org/ghc/ :? for help
Loading package base ...
Wolfgang Jeltsch wrote:
Covering reactive programming would indeed be interesting.
I agree. However, we have no plans to cover this topic. I don't
believe any of us has used FRP, and my impression of it as an approach
is that it's not yet cooked. We already have our hands and TOC full
On Jan 22, 2008 6:19 PM, Chad Scherrer [EMAIL PROTECTED] wrote:
A lazy ByteString is an alternative to a String=[Char]
Careful. ByteString is an alternative to [Word8]. Converting [Char] to
ByteString and back requires an encoding. (Unfortunately, the only encoding
that comes with the
On Wed, Jan 23, 2008 at 03:26:51PM +, Simon Marlow wrote:
There are still times when I see nothing happening, for example in the
unpull test on the GHC repo (see previous messages), the last progress
message I get is
Reading patches in /64playpen/simonmar/ghc-darcs2 17040
and it
On Jan 23, 2008 12:20 PM, Valery V. Vorotyntsev [EMAIL PROTECTED] wrote:
I've built GHC from darcs, and...
Could anybody tell me, what's the purpose of Arrow[1] not having `'
method?
It's derived from the Category superclass.
--
Dave Menendez [EMAIL PROTECTED]
I think this points out the benefit (or even the need), given the
fast-paced evolution of Haskell and its libraries as a whole, of an
evolving online supplement to your book, minimally with errata and code,
but also (as publisher resources permit) with intermittently updated
appendices on
Careful. ByteString is an alternative to [Word8]. Converting [Char] to
ByteString and back requires an encoding. (Unfortunately, the only encoding
that comes with the bytestring package is lossy.)
Ahh, good point. I guess I almost always just use them to read ASCII,
so it hasn't been an issue.
Given a reasonable Storable instance of pairs you could use:
http://code.haskell.org/~sjanssen/storablevector
I hadn't seen that before, thanks!
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On Tuesday 22 January 2008 14:30:22 Bryan O'Sullivan wrote:
Paul Moore wrote:
I'm posting here because there doesn't seem to be an overall comment
section, but the TOC seems to cover less ground than I expected. Is
the TOC meant to be complete?
No, it's less than a third of the whole
Maybe a dedicated SIMD version of SHA1?
http://arctic.org/~dean/crypto/sha1.html
http://arctic.org/%7Edean/crypto/sha1.html
Cheers,
Peter
David Roundy wrote:
On Wed, Jan 23, 2008 at 03:26:51PM +, Simon Marlow wrote:
There are still times when I see nothing happening, for example in the
On Wed, Jan 23, 2008 at 10:09:05PM +0100, Peter Verswyvelen wrote:
Maybe a dedicated SIMD version of SHA1?
http://arctic.org/~dean/crypto/sha1.html
From what that page says, it looks like thta sha1 is not recommended for
actual use (although they don't test with gcc 4.x). I've come across
i would recommend just using the native one. The best performance
that I was able to get with ghc 6.6 was still seven times slower then
the native sha1 implementation.
2008/1/23 Peter Verswyvelen [EMAIL PROTECTED]:
Maybe a dedicated SIMD version of SHA1?
I have to ask: why does darcs use SHA-1?
On the one hand, SHA-1 is cryptographically fragile and is deprecated
for use in applications that require collision-resistance and pre-
image resistance. SHA-2 is the current standard for those
applications (SHA-2 is about twice as expensive in CPU
Jon Harrop [EMAIL PROTECTED] wrote:
On Tuesday 22 January 2008 14:30:22 Bryan O'Sullivan wrote:
Paul Moore wrote:
I'm posting here because there doesn't seem to be an overall
comment section, but the TOC seems to cover less ground than I
expected. Is the TOC meant to be complete?
On Wed, Jan 23, 2008 at 02:55:06PM -0700, zooko wrote:
I have to ask: why does darcs use SHA-1?
On the one hand, SHA-1 is cryptographically fragile and is deprecated
for use in applications that require collision-resistance and pre-
image resistance. SHA-2 is the current standard for
Here are things I liked most (compared with standard imperative
languages) when I started to learn functional programming:
* algebraic types with pattern matching work nicely as tagged unions;
doing a tagged union manually in C/C++/C# is a pain (there is no
automatic tag (provided you dismiss
In
principle it is good to provide a cryptographically secure hash, as
this
allows users to sign their repositories by signing a single file,
which
seems like it's potentially quite a useful feature.
Can you be more specific about this -- who can sign a repository?
How is such a
* zooko wrote:
On the one hand, SHA-1 is cryptographically fragile and is deprecated
for use in applications that require collision-resistance and pre-
image resistance.
Such a cryptographically strong requirement is not given in the darcs case.
SHA-1 is still used in almost all existing
stephan.friedrichs:
Simon Peyton-Jones wrote:
[...]
2. War stories from real life. eg In company X in 2004 they rewrote
their application in Haskell/Caml with result Y. Again, for my purpose
I can't tell very long stories; but your message can give a bit more
detail than one might
On Jan 23, 2008 5:29 AM, Simon Peyton-Jones [EMAIL PROTECTED] wrote:
Friends
Over the next few months I'm giving two or three talks to groups of *non*
functional programmers about why functional programming is interesting and
important. If you like, it's the same general goal as John
On 1/23/08, Peter Hercek [EMAIL PROTECTED] wrote:
Other things did not seem that great for me from the beginning. For
example: referential transparency - just enforces what you can take care
not to do yourself
...if you never make mistakes, that is.
(e.g. in C# you just cannot be sure some
catamorphism:
On 1/23/08, Peter Hercek [EMAIL PROTECTED] wrote:
Other things did not seem that great for me from the beginning. For
example: referential transparency - just enforces what you can take care
not to do yourself
...if you never make mistakes, that is.
(e.g. in C# you just
On Wed, 2008-01-23 at 15:42 -0800, Don Stewart wrote:
catamorphism:
On 1/23/08, Peter Hercek [EMAIL PROTECTED] wrote:
Other things did not seem that great for me from the beginning. For
example: referential transparency - just enforces what you can take care
not to do yourself
This is pure general waffle, but I saw the following comment on reddit.com
which impressed me:
C isn't hard; programming in C is hard. On the other hand: Haskell is hard,
but programming in Haskell is easy.
Mike
Simon Peyton-Jones wrote:
Friends
Over the next few months I'm giving two or
On 2008-01-23, Ketil Malde [EMAIL PROTECTED] wrote:
Achim Schneider [EMAIL PROTECTED] writes:
Just out of curiosity: how do you plan to find out server locations
(beyond the obvious top-level domain - country heuristics)?
$ whois ip | grep Country
Some also have location in the TXT field
52 matches
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