Hey guys,
Is there a reason why the objectIO package is not part of the latest GHC
release for windows?
Cheers,
Martijn
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hello,
I have been using some of the functions of the classes Real and
Fractional and I have observed that with the funcion toRational we can
obtain the fraction that represents a given number. For instance:
*P2 toRational (5.2::Float)
5452595 % 1048576
Why we obtain this numbers instead of 52 %
I have been using some of the functions of the classes Real and
Fractional and I have observed that with the funcion
toRational we can
obtain the fraction that represents a given number. For instance:
*P2 toRational (5.2::Float)
5452595 % 1048576
Why we obtain this numbers instead of 52
Yes, they all seem to be right.
You get these funny effects because numbers like 5.2 do not have an
exact representation with floating point numbers in base to (like Float
and Double most likely have on your machine). The number 5.2 is stored
as a slightly different number as a Float, but the
Lennart Augustsson wrote:
The number 5.2 is stored
as a slightly different number as a Float, but the toRational function
is exact
so it gives you the number corresponding to the internal representation.
Take a course on numerical analysis. :)
Nope. Take a course entitled:
Why all you
G'day all.
On Tue, Nov 12, 2002 at 05:25:42PM +, Alastair Reid wrote:
So as people try to come up with a distribution and build mechanism
that will work for GHC, it would be good to think about how that
same mechanism would work for Hugs too.
If you will allow me to AOL...
Me too!
Could you be more concrete? What extension of the package mechanism
did you have in mind? (personally I had in mind a standard autoconf
+ Makefiles story for the build system, but I'm sure there are
better ways).
I was thinking add all the things that make packages insufficient
to use as
Hi all,
If I use an STRef to a record, will a new record be created each time I want
to update a single field? Or can I expect GHC to optimize it and have the
field of the record updated in place?
Right now I'm using a record of STRefs, like:
data E s = E{
refi :: STRef s Int,
Ian Lynagh [EMAIL PROTECTED] writes:
I note with some sadness the more restrictive license that may be placed
on the Haskell 98 Report, as reported by the HCA.
I have a hard time imagining what this actually means. The report, as
it is licensed now allows for:
I have just grabbed a copy of
On Tue, Nov 12, 2002 at 01:19:03AM +, Ian Lynagh wrote:
I note with some sadness the more restrictive license that may be placed
on the Haskell 98 Report, as reported by the HCA. The great
openness/freeness of haskell, both the report and implementations, is,
IMO, one of its most important
hi,
now that the report is pretty much stable, are there any plans of
putting it on the Haskell web site?
bye
iavor
--
==
| Iavor S. Diatchki, Ph.D. student |
| Department of Computer Science and Engineering |
| School of OGI at
Yes - we'll have the new report up soon. Once Simon quits messing
with it :-).
John
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A simple, primitive question:
has anybody here used in a non-trivial way the showsPrec anti-parser?
My students asked me what is it for, it is never used in the Hugs
Prelude, OK, once: possible parentheses around fractions n%d.
I explained that it is a good contraption to make one own pretty-
has anybody here used in a non-trivial way the showsPrec anti-parser?
Isn't the idea to make things trivial while avoiding performance
penalties? Perhaps: simple pretty-printing of abstract syntax trees?
I often use it to get simple debugging output for complex internal
data structures (first,
Hi,
I've just recently learned about Haskell, and I'm
impressed by the abstractions and expressiveness that
it affords. I'm particularly interested in it for a
small parser project that I'm planning.
However, my main programming languages are Python and
C++, and for various reasons switching
I hope we don't have a repeat of the MathWorld website
shutdown.* I also can't find a webpage with the definition
of Standard ML... only avaible in print from MIT Press?
Chris
* http://mathworld.wolfram.com/erics_commentary.html
=
Christopher Milton
[EMAIL PROTECTED]
If you are steaming with compicated codes, then how about taking a break.
Let's play with a simple cat.
\begin{code}
main = mapM (=putChar) getCharS where getCharS = getChar:getCharS
\end{code}
Tested with ghc.
Works good except that you get some messages on stderror
because eof is not
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