Pleased to meet you Jim.
extended precision, like so many things in J, is too simple to be
obvious. I believe your problem translates as:
! i.99x
- michael dykman
On Tue, Oct 13, 2009 at 3:59 PM, James Foit <[email protected]> wrote:
>
> [1] INTRO
>
> Hello everyone. I'm Jim. I found J while searching for APL and couldn't
> have asked for a more personalized language (not least of all because the
> language's name is my first initial). Brief background: I taught APL to
> senior Industrial Engineering students a quarter century ago. I recognized
> then that APL, and now J, was something that other languages weren't: "It
> was/is a language designed to meet the needs of the mind rather than the
> needs of the computer." I love it.
>
>
>
> [2] VIEWPOINTS
>
> I've read ur comments for a few days and have a few opinions. J is a
> LANGUAGE. As such, let's revert to Shrunk and White's "Elements of Style":
> Shorter is better. I'll adjusted it a bit: Excluding sexuality, shorter is
> better 99% of the time: Conciseness facilitates understanding. If you
> lengthen the programs you are catering to people too lazy to learn the
> language and you might as well just program in C.
>
>
>
> On the flip-side from short code, I believe deeper documentation is better
> 99% of the time. I don't mean longer, I mean documentation that has
> hypertext links to every term/concept related to J. The links would
> eliminate redundancy, maintain conciseness, and enhance understanding. There
> would be no reason for people to whine about not being able to read code
> since they would have the ability to click on any primative (or other things
> such as often used tacit programs) and pull up a definition for it. With
> this, getting over the learning curve would be far far easier.
>
>
>
> [3] PLEASE HELP ME
>
> Where can I find information on extended precision. I found a little bit in
> section 32 of JfC, but it's a bit hard to follow. Specifically, I need to
> make an array with 99 elements with each element being n!. This is done with
> this code:
>
> x =: ! i. 99
>
>
>
> Unfortunately, I need at least 40 digits of precision. I tried a bunch of
> stuff. Failed. This one gave me a domain error:
>
> ]e =: ! 40 ": i. 99
>
> Any suggestions?
>
>
>
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>
--
- michael dykman
- [email protected]
Don’t worry about people stealing your ideas. If they’re any good,
you’ll have to ram them down their throats!
Howard Aiken
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