Some minor quirks with today's ghc-4.00:
* fptools/ghc/rts/StgPrimFloat.c did not compile because of the redefiniton of
union ieee754_double, which is already defined in /usr/include/ieee754.h on
my Linux (libc5) box. Fix: rename ieee754_double to my_ieee754_double. This
works,
This morning I got the cvs source tree from
CVSROOT="[EMAIL PROTECTED]:/cvs"
[..]
Did you put Version 3.03 back in the repository? Or is it just
the wrong name?
[to the list because I had the same problem]
The head of the tree is still 3.03; if you want 4 you have to do
cvs co -r
Hello,
This morning I got the cvs source tree from
CVSROOT="[EMAIL PROTECTED]:/cvs"
The build created the files
lrwxrwxrwx 1 laitenbe pardc 8 Nov 12 07:09 ghc - ghc-3.03*
-rwxr-xr-x 1 laitenbe pardc 103189 Nov 12 07:09 ghc-3.03*
-rwxr-xr-x 1 laitenbe pardc
I think it would be
really nice if it were possible to create a container capable of
containing any number of objects of any number of types It would
That's not possible in Haskell. Since you want an any number
of different types in this new type it would need to have a variable
number
[...] if you dislike tuples you can use nested pairs
At the cost of losing a little type-safety.
That's really a very minimal loss. (And it's not really a loss of
type safety, just the possibilty of confusing a part of a "tuple" with
another "tuple"). I'd be more worried about the
But if you dislike tuples you can use nested pairs, like
infixr 0 :.
data T a b = a :. b
Now you can write
'a' :. True :. "Hello" :. ()
which has type
T Char (T Bool (T String ()))
But I guess that's not what you were after?
-- Lennart
Fergus replied:
[...] if you dislike
PS. I've got a length function for ``heterogeneous lists'', as
they appear in nested pairs, in Hugs. However, it uses the
type system extensions available in 1.3c or in 1.4 [98 BETA].
How much can you do in plain Haskell??? in Cayenne?-)
oops.
On second thought, this length
[This message is sent through a WWW-Email gateway.]
[The authenticity of the sender can not be validated.]
[Message sent from the following machine sailor.lib.md.us - 198.76.201.196 ]
[after accessing this URL ]
--
You can use nested pairss? Of multiple types? I tried this and it
failed. I don't
