RE: Lack of software abstractions

dydre wrote:
>> 1.  The notation J layers many things in unique ways and
>> they are not completely documented.
For example - a few terms from the J Vocabulary:

(several dozen lines of vocabulary elided)

> Can you show me another language where the same sets
> of concepts are mapped to equivalent words - for example
> in C++ or Java or any other  language of your choosing,
> is there a concept such as Double and Not-Or combined in
> a single word?

Obviously, some concepts are shared.  For example, the
concept of "Less Than" is used in both C++ and Java.

However, just as obviously, the fine points of the
implementation differ.  For example, Java does not
allow my to concisely express the test 10 < 3 5 7 11 13.
(C++ does let me express array comparison, there
are limitations and complexities there, and I have
to write a fair bit of the implementation myself.)

Likewise, I'd have no problem expressing Double and Not-Or
combined in the same word in either Java and C++, but in
neither language are those particular concepts combined
in a built-in word.

> This brings up another point for me.  I imagine people
> who actual use J have devised an environment for themselves
> but I have nothing equivalent to the simple concept of
> saving an APL workspace.

http://www.jsoftware.com/jwiki/Trash/FileJVariables?

-- 
Raul