[Jprogramming] Project Euler 16, J vs Haskell

[Aai]

?????

Thnx


On 29-05-14 10:58, Raul Miller wrote:
>     !1 1.5 2
> 1 1.32934 2
>
> To get the middle value in Haskell you probably need something like
> http://www.haskell.org/haskellwiki/?title=Gamma_and_Beta_function&oldid=25546
>
> Except, that seems to be a deleted page, for some reason, so maybe what you
> are supposed to do is use the logGamma function (
> http://hackage.haskell.org/package/math-functions-0.1.1.2/docs/Numeric-SpecFunctions.html#g:1)
> and then find e to that power. So it's completely unambiguous, once you've
> decided on the appropriate data type and which version of haskell you are
> using and the underlying specification designed by someone who was probably
> just making stuff up.
>
> There's some problem here, from my point of view, one of which has to do
> with a fundamental misunderstanding of how we process language. Words are
> inherently ambiguous because they are symbols - they refer to collections
> of experiences (which will vary from person to person, but which will also
> have commonalities from person to person). And we build sentences and
> discussions where a part of the process is to constrain the topic to the
> point where we are comfortable that we've a general agreement on what's
> being said. (But even that drifts during the course of a conversation.)
>
> Anyways... some people are going to like Haskell, and that's fine. It can
> be a fun language, but like any language it will have flaws. And the more
> popular a language is, the more criticism it's going to get and the more
> useful stuff will be encoded using it, and the harder it will be to find
> the useful stuff (because there will also be more useless stuff).
>
> You just sort of have to live with the flaws while getting stuff done that
> you find useful.
>
> For myself, I like J and see a lot of potential in it, but it's not the
> same potential that I see in Haskell. Still, this is a J forum, not a
> Haskell forum, so I should also probably stick with J here and (since this
> is the programming forum) I should also include some J code.
>
> It's sort of like the difference between being busy and getting stuff done.
>
> So...
>
> Here's an expression that will convert Gray Code to Binary:
>     ~:/\&.|:
>
> So here's an example of converting Binary to Gray Code:
>     ~:/\&.|:inv #:i.8
> 0 0 0
> 0 0 1
> 0 1 1
> 0 1 0
> 1 1 0
> 1 1 1
> 1 0 1
> 1 0 0
>
> That's fun, in my opinion. And I don't need contrasts with other languages
> to make it so.
>
> More generally, one of the things I really like about J is how many
> concepts "just work". There's a lot of thought and care that went into the
> language and that makes it expressive in a fun way.
>
> Thanks,
>

-- 
Met vriendelijke groet,
@@i = Arie Groeneveld