-- We apologize for multiple copies --
***
1st International Workshop on Automated
Specification and Verification
of Web Sites (WWV'05)
March 14-15 2005, Valencia, SPAIN
Dear Haskell-list
On behalf of Microsoft Research, Cambridge, I would like to announce
that applications for intern positions at our lab for 2005 are now being
accepted. Our lab has a number of groups, but of particular interest
may be the Programming Principles and Tools group
Dear all,
Happy new year!
We proudly announce the alpha release of PPCHugs Project, which
is porting Hugs 98 Project to Windows CE based PocketPC.
For more details, please refer to the following URL:
http://www.comp.nus.edu.sg/~luzm/ppchugs
Your comments and feedbacks are welcome!
Best Wishes,
In article [EMAIL PROTECTED],
Conor McBride [EMAIL PROTECTED] wrote:
The latter also means that the existential type encoding of 'some good
term' doesn't give you a runnable term. There is thus no useful
future-proof way of reflecting back from the type level to the term
level. Any
I am afraid that something is wrong with my understanding of multi-
param classes with dependencies. I tried to generalize one of my old
packages for quantum *abstract* computations, where state vectors are
defined as functional objects, whose codomain has some arithmetic.
It is easy to see that
In article [EMAIL PROTECTED], [EMAIL PROTECTED]
wrote:
GHCi is correct to complain:
class Vspace a v | v - a
OK, the first parameter (a) depends on the second (v).
instance Vspace a a where
And this determines it: the first parameter must always be the same as
the second.
instance
Ashley Yakeley writes:
GHCi is correct to complain:
class Vspace a v | v - a
OK, the first parameter (a) depends on the second (v).
This is what I want. For a given set of vectors, the associated
scalars are unique, otherwise I would have problems with norm.
But I have problems anyway...
[EMAIL PROTECTED] writes:
This is what I want. For a given set of vectors, the associated
scalars are unique, otherwise I would have problems with norm.
In the instance Vspace a a the compiler doesn't know that a is
supposed to be a scalar only. It matches vector types (functions) too.
And
In article [EMAIL PROTECTED], [EMAIL PROTECTED]
wrote:
This is what I want. For a given set of vectors, the associated
scalars are unique, otherwise I would have problems with norm.
But I have problems anyway...
instance Vspace a a where
This says, for any vector type a, the associated
what coercion can i use to get the below program to compile?
i see
class (Real a, Fractional a) = RealFrac a where
round :: (Integral b) = a - b
and
class (Fractional a) = Floating a where
sqrt :: a - a
fillK_ :: Int - Int
fillK_ x = round (sqrt x) -- line 2
what coercion can i use to get the below program to
compile?
i see
class (Real a, Fractional a) = RealFrac a where
round :: (Integral b) = a - b
and
class (Fractional a) = Floating a where
sqrt :: a - a
fillK_ :: Int - Int
fillK_ x = round (sqrt x) -- line
Another newbie question.
The following is a naive attempt at a word count function, that takes a
string and returns a list of word/count pairs.
import Char
isLetter c = isAlphaNum c || c=='\''
normalize = map toLower . filter isLetter
isWord [] = False
isWord s = True
nwords =
12 matches
Mail list logo
