Hello,
The following blog post by Joyent is worth reading:
http://joyent.com/blog/diy-vs-as-a-service-with-memcachier
"We don't really believe in Node.js (Go & Haskell are our
choices), so that is a small concern to us, but everyone has
their failings."
--Kazu
_
Hi, hoodle lovers :-)
I am pleased to announce hoodle v0.1.1.
In this version, I added the following functionality and made several
improvement.
* context (popup) menu support : after you select, you will see a
context menu for the selected items (make pdf, make svg, cut, copy,
delete ...) You
Welcome to IEEE floating point math!
Wikipedia has a good article on the specification. If you want exact
fractional numbers for your own purposes, there are a number of ways around
the limits of floats.
Rational will represent numbers internally as fractions, and still allow
you to use the same
On 13-01-16 10:04 AM, Luis Cabellos wrote:
You should read
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.22.6768
If you want to be efficient with floats. Language independent.
And also http://floating-point-gui.de/
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On 16/01/2013 13:55, Tom Davie wrote:
Prelude> import Data.Ratio
Prelude Data.Ratio> 93 % 10 - (2 * 9 % 2)
3 % 10
Or even just a type annotation:
Prelude> (9.3 - (2 * 4.5)) :: Rational
3 % 10
On 16 Jan 2013, at 13:25, ivan dragolov mailto:i...@dragolov.net>> wrote:
9.3 - (2 * 4.5) => 0.30
On Wed, Jan 16, 2013 at 11:22 PM, Thiago Negri wrote:
> The C spec allows the use of GLboolean values where GLenums are expected.
>
Some fixes off the top of my head (caveats apply):
* define a lift :: GLboolean -> GLenum
* use a typeclass GLenumlike
* if there aren't too many of them, roll a G
Thanks for the answer, but I'm trying to avoid type classes.
By the way, I'm not trying to embed OO into Haskell.
I'm trying to solve this issue:
https://github.com/haskell-opengl/OpenGLRaw/issues/15
The binding to OpenGL declares GLenum as CUInt and GLboolean as CUChar,
meaning I can't use a GLe
For your particular constraints, it can be as easy as:
class IsA a where
toA :: a -> A
foo' :: IsA a => a -> C
foo' = foo . toA
However, you may asking the wrong question since it smells like you're
trying to embed OO into Haskell =).
Cheers,
On Wed, Jan 16, 2013 at 1:03 PM, Thiago N
On Wednesday 16 January 2013, 15:25:15, ivan dragolov wrote:
> 9.3 - (2 * 4.5) => 0.3007
>
> I expected 0.3
>
> ?
Prelude Text.FShow.RealFloat> FD 9.3
9.300710542735760100185871124267578125
The closest Double to 9.3 is somewhat larger than 9.3. Since the first two
signi
Hello.
How do I achieve type hierarchy in Haskell?
Suppose we have the following code:
foo :: A -> C
bar :: B -> C
I want something that allow me to say that B is a subtype of A, meaning:
1. I can use a value of type A where a value of type A is needed.
2. I can use a value of type B where a va
You should read
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.22.6768
If you want to be efficient with floats. Language independent.
Luis
On Wed, Jan 16, 2013 at 2:25 PM, ivan dragolov wrote:
>
> 9.3 - (2 * 4.5) => 0.3007
>
> I expected 0.3
>
> ?
>
> --
> Иван Драголов
>
Prelude> import Data.Ratio
Prelude Data.Ratio> 93 % 10 - (2 * 9 % 2)
3 % 10
Floating point sucks, avoid it if you can.
Thanks
Tom Davie
On 16 Jan 2013, at 13:25, ivan dragolov wrote:
>
> 9.3 - (2 * 4.5) => 0.3007
>
> I expected 0.3
>
> ?
>
> --
> Иван Драголов
> dragolov.net
This may be of interest if you want full-precision decimals:
http://www.haskell.org/haskellwiki/Libraries_and_tools/Mathematics#Decimal_numbers
On Wed, Jan 16, 2013 at 7:30 AM, Patrick Mylund Nielsen <
hask...@patrickmylund.com> wrote:
> Fun with floating point!
>
> # ghci
> GHCi, version 7.4.2:
This is a rounding error. It will happen in any language due to the
imprecision of floats; for example, using Ruby:
$ irb
1.9.3-p286 :001 > 9.3 - (2 * 4.5)
=> 0.3007
1.9.3-p286 :001 > ^D
$
Read this:
http://floating-point-gui.de/
On Wed, Jan 16, 2013 at 7:25 AM, ivan dragolov wrot
Fun with floating point!
# ghci
GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> 9223372036854775807.0 == 9223372036854775808
True
http
9.3 - (2 * 4.5) => 0.3007
I expected 0.3
?
--
Иван Драголов
dragolov.net
GSM: 0888 63 19 46
GSM за SMS: 0878 82 83 93
facebook.com/ivan.dragolov
twitter.com/dragolov
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After a few weeks of beta status [1], I've now released version 4.0 of
the Hakyll static site generator library. I'm really glad with this
release, as from what I've found and heard, it makes many things a lot
easier.
# Main changes
- The important `Compiler` type has been changed from `Arrow` to
Dear all,
The School of Computer Science in Nottingham is advertising
a number of PhD studentships. Applicants in the area of
the Functional Programming Lab (fp.cs.nott.ac.uk) would
be very welcome. If you are interested in applying, please
contact a potential academic supervisor in the FP lab p
That is pretty much the way I do now. Just curious if there is another
way
On Wed, Jan 16, 2013 at 3:57 PM, Erik Hesselink wrote:
> You could do what I do: create an alias in bash. I have in my ~/.bashrc:
>
> alias ciq='cabal install --disable-documentation
> --disable-library-profiling --d
Never noticed copy command. Let me see
On Wed, Jan 16, 2013 at 1:51 PM, Albert Y. C. Lai wrote:
> On 13-01-15 09:10 PM, Magicloud Magiclouds wrote:
>
>> So the only way is to use param every time I build this certain project?
>> Really hoping I could disable it in project.cabal
>>
>
>
You could do what I do: create an alias in bash. I have in my ~/.bashrc:
alias ciq='cabal install --disable-documentation
--disable-library-profiling --disable-executable-profiling'
The alias 'ciq' stands for 'cabal install quick' and disables things I
don't need during development, but do slow d
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