Hi,
I'm reading The Craft of Functional Programming and I found something
I don't understand in page 185.
It says:
Suppose first that we want to write a curried version of a function g,
which is itself uncurried and of type (a,b) - c.
curry g
This funtion expects its arguments as a pair,
Hi,
On 25/04/11 14:20, Ozgur Akgun wrote:
On 25 April 2011 14:11, Angel de Vicente ang...@iac.es
mailto:ang...@iac.es wrote:
curry :: ((a,b) - c) - (a - b - c)
is the same as:
curry :: ((a,b) - c) - a - b - c
thanks, it makes sense now. Somehow I thought that adding the
parenthesis
Hi,
On 25/04/11 14:21, Stephen Tetley wrote:
On 25 April 2011 14:11, Angel de Vicenteang...@iac.es wrote:
curry :: ((a,b) - c) - (a - b - c)
curry g x y = g (x,y)
Is expressing curry this way more illuminating?
curry :: ((a,b) - c) - (a - b - c)
curry g = \x y - g (x,y)
That is,
Hi
On 14/04/11 10:29, Dmitri O.Kondratiev wrote:
I am looking for a site providing on-line automatic judge for
Programming Challenges that can be coded in Haskell.
For example this site:
http://www.programming-challenges.com
provides lots of interesting programming provlems:
Hi,
On 14/04/11 12:16, Dmitri O.Kondratiev wrote:
Angel, thanks!
This site looks good. Do you know if spoj.pl http://spoj.pl has a
search utility for problems?
It would be great if they have 3n+1 problem I wrote about in a separate
thread here.
yes they have a search utility. Searching for
Hi,
I'm stuck at page 151 of Real World Haskell and hoping that perhaps some
of you can give me a hand here...
The code that is giving me trouble is below.
data JValue = JString String
| JNumber Double
| JBool Bool
| JNull
| JObject [(String,
Hi,
thanks for the answer. This is my first attempt at Typeclasses, and I
think there is something deep that I don't understand...
On 26/07/10 15:03, Daniel Fischer wrote:
class JSON a where
toJValue :: a - JValue
fromJValue :: JValue - Either JSONError a
instance JSON JValue
Hi,
And now that we are at it... In the next page, 152 there is the
following instance definition, but no explanation is (I think) given of
what it means:
instance (JSON a) = JSON [a] where
until then all instance definitions where of the type
instance JSON Int where ...
How should I read
Hi,
thanks for all the replies. I'm off now to try all the suggestions...
Cheers,
Ángel de Vicente
--
http://www.iac.es/galeria/angelv/
High Performance Computing Support PostDoc
Instituto de Astrofísica de Canarias
Hi,
I'm going through the first chapters of the Real World Haskell book,
so I'm still a complete newbie, but today I was hoping I could solve
the following function in Haskell, for large numbers (n 108)
f(n) = max(n,f(n/2)+f(n/3)+f(n/4))
I've seen examples of memoization in Haskell to solve
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