hello, i just want to ask a simple question: does
somebody have or know where to find a haskell program that calculates the
number e, that is the list of infinite digits? Because i think it may be
possible to do it, but i haven´t find the way to do it.
what i am looking for is something like
You might want to use
e n = sum [1 % fak x | x <- [0..n]]
and convert it to floating point representation via fromRational (e l)
Bernd Holzmüller
Luis Pablo Michelena schrieb:
>
> hello, i just want to ask a simple question: does somebody have or
> know where to find a haskell program that c
Luis Pablo Michelena <[EMAIL PROTECTED]> writes
on the subject `series'
> where to find a haskell program that calculates the number e, that is
> the list of infinite digits?
> [..]
> what i am looking for is something like the ertostenes sifts, that
> prints every
ohn Hughes
-
Here's a way to compute all the digits of e. We use the series
e = 2 + 1 + 1 + 1 + ...
------
2!3!4!
which we can think of as representing e as 2.1... in a
a way to compute all the digits of e. We use the series
e = 2 + 1 + 1 + 1 + ...
------
2!3!4!
which we can think of as representing e as 2.1... in a strange number
system with a varying base. In this number system, the fraction
> > hello, i just want to ask a simple question: does
> > somebody have or knowwhere to find a haskell program that
> > calculates the number e, that is the list of infinite
> > digits?
> It's a nice problem, which I encountered many years
> ago as one of the first examples I saw of lazy e
On Wed, Aug 15, 2001 at 02:15:31AM -0300, Luis Pablo Michelena wrote:
> hello, i just want to ask a simple question: does somebody have or
> know where to find a haskell program that calculates the number e,
> that is the list of infinite digits? Because i think it may be
> possible to do it, but
> hello, i just want to ask a simple question: does somebody have or
> know where to find a haskell program that calculates the number e,
> that is the list of infinite digits?
Hugs includes such a function in its demos.
Look at eFactBase in the file hugs98/demos/Examples.hs
There's a lot of oth
For lovers of things small and beautiful,
http://www.cs.dartmouth.edu/~doug/powser.html
boils down basic operations on power series with numeric
coefficients to the bare minimum--each is a one-liner.
Included are overloaded arithmetic operators, integration,
differentiation, functional composition
On 7/12/07, Doug McIlroy <[EMAIL PROTECTED]> wrote:
http://www.cs.dartmouth.edu/~doug/powser.html
Very nice. I would only recommend that you include:
scale k f = map (k*) f
and have (*) use it. Thanks for your contribution!
--
Taral <[EMAIL PROTECTED]>
"Please let me know if there's any furt
On Thu, 2007-07-12 at 12:49 -0400, Doug McIlroy wrote:
> For lovers of things small and beautiful,
> http://www.cs.dartmouth.edu/~doug/powser.html
> boils down basic operations on power series with numeric
> coefficients to the bare minimum--each is a one-liner.
> Included
Derek Elkins writes:
Doug McIlroy wrote:
For lovers of things small and beautiful,
http://www.cs.dartmouth.edu/~doug/powser.html
...
and a link to your earlier Functional Pearl,
http://citeseer.ist.psu.edu/mcilroy98power.html
If somebody is interested in similar manipulations, sometimes a b
This is really interesting. I love how the typechecker can resolve
1:0:1 (representing (1+x^2))
1 : 0 : 1
=> 1 : 0 : (fromInteger 1 :: [Integer])
=> 1 : 0 : (series (fromInteger 1 :: Integer))
=> 1 : 0 : (series 1)
=> 1 : 0 : 1 : repeat 0
(I'm going to go on a bit of a soapbox
On 7/17/07, Ryan Ingram <[EMAIL PROTECTED]> wrote:
Automatic conversion to numeric types via fromInteger could be
extended to other types; fromList and fromString could be applied
automatically to convert other literals:
class LiteralString a where fromString :: String -> a
class LiteralList a b
Am Dienstag, 17. Juli 2007 11:47 schrieb Bas van Dijk:
> […]
> GHC HEAD has support for overloaded String literals. See:
>
> http://haskell.org/ghc/dist/current/docs/users_guide/other-type-extensions.
> html#overloaded-strings
These are really good news!
However, the identifier IsString is probl
As was already announced, I'll try to provide an article for each
upcoming TMR [1] issue, regarding some subject in the world of Haskell.
My intention is to write a short piece on some item which fits the
monthly subject.
The first topic for the series of 'take 10 [1..]' articl
The *Chalmers Online Functional Programming Seminar Series
<http://chalmersfp.org/>* is organized by the Chalmers Functional
Programming Group, as a way to exploit the fact that so many of us in the
FP community are already meeting and working online these days. Our aim is
to bring the peo
The *Chalmers Online Functional Programming Seminar Series
<http://chalmersfp.org/>* is organized by the Chalmers Functional
Programming Group, as a way to exploit the fact that so many of us in the
FP community are already meeting and working online these days. Our aim is
to bring the peo
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