On Tue, 16 Nov 2004 15:04:02 +, Ian Lynagh [EMAIL PROTECTED] wrote:
Hi all,
Is there a good reason why I can't say
data Bar = Bar { _ :: Int, _ :: Char, x :: Bool }
?
(Or data Bar = Bar { Int, Char, x :: Bool } if you prefer, but that's
susceptible to typos of the x, y, z ::
On Tue, 19 Oct 2004 15:56:01 +0100 (BST), MR K P SCHUPKE
[EMAIL PROTECTED] wrote:
* I'm not at all keen on making '..deriving( Foo )' mean
$(derive 'Foo) or something like that. Just make the TH
call yourself!
The current situation is that the code that generates the derived
On Wed, 13 Oct 2004 13:21:26 +0100, Simon Peyton-Jones
[EMAIL PROTECTED] wrote:
1. Separate 'deriving' from the data type decl, so you can say
derive( Data TA, Typeable TA )
anywhere. People sometimes ask for this for other reasons.
2. Allow instances in hi-boot files
You might
On Fri, 3 Sep 2004 01:35:45 +0100, Jorge Adriano Aires
[EMAIL PROTECTED] wrote:
Not sure which part is not clear... I'll just try to explain each of them.
Lets say I'm implementing a generators for Graphs.
Also, even when I'm implementing a generator, I want to see how it is
working.
I
On Mon, 16 Aug 2004 09:01:45 -0700 (PDT), Ron de Bruijn
[EMAIL PROTECTED] wrote:
I was playing with QuickCheck and I just wanted to put
all of my tests in a list, but that's not possible,
because of the fact that a list can only contain
values of the same type.
So concrete I would like to
On Fri, 13 Aug 2004 15:32:51 -0700, Lyle Kopnicky [EMAIL PROTECTED] wrote:
Simon,
That makes good sense, as it's hard to read code that contains standard
terms used in a nonstandard way. I was just concerned that the function
name I wanted to use was already in the Prelude! Perhaps the
, and it would be
more intuitive to use.
Wouldn't that make
getSocketOption :: Socket - SocketOption - IO Int
a bit strange? How would you propose to change it?
/Martin
--
Martin Sjögren [EMAIL PROTECTED]
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tis 2004-03-30 klockan 17.30 skrev S. Alexander Jacobson:
I would assume that this function:
foo list@(h:t) = list
is equivalent to
foo list = list
where (h:t)=list
But passing [] to the first generates an error
even though h and t are never used! Passing [] to
the second
.
So, the bottom line here is that with ghc6 I *cannot* have the import,
but in ghc5 I *must* have it? Gah.
Thanks for your help.
/Martin
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Martin Sjögren
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let hello = hello : hello in putStr
'unicode' are Really Nice strings...
Having something like this in Haskell would be wonderful, unfortunately
I don't know much about Unicode beyond happily using it, so I don't have
any suggestions or anything. :)
/Martin
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Martin Sjögren
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Phone: +46 (0)31 7490880 Cell
in instance head
You get around it with hugs -98 or ghc -fglasgow-exts. Dunno about
nhc98.
/Martin
NB: I just used class Foo ; instance Foo String to produce these error
messages...
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Martin Sjögren
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Hello
I'm looking for a paper or some other documentation on the exact
semantics of Core. I've read the paper about the concrete syntax, and it
briefly mentions the abstract syntax and something about the case
expression, but not a lot. Unless I missed something?
I'm also looking for actual code
tis 2003-02-18 klockan 09.49 skrev Simon Peyton-Jones:
I don't know of any separate description of the semantics of Core, but it's just the
lambda calculus with let, letrec and case. There's plenty of code that works over
Core in GHC itself, but no separate libraries. There is a library to
failed for pattern (Data.Maybe.Just
obj)
Which indicates that fromDynamic returned Nothing. What is the problem
here? Do I have to employ special trickery to use Dynamic with records?
I'm using ghc 5.04, as packaged by Debian.
Regards,
Martin Sjögren
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