CoSy-NoteComputing Newsletter @ 0112 / Y K ? 0 : STRUCTURE

Why have I moved from ancient flat APL , skipping the great modern nested APLs
,
all the way to the youngest , most independently minded evolute of this
language
family ? What are differences , the pros and cons of K versus other APLs and
Ken
Iverson's own evolute J ?

The first part of the answer , a discussion of and introduction to the
structure
of K , is now available at http://cosy.com/K/CoSy/Y_K.htm .
A number of screens images of K.CoSy illuminate the concepts presented .


I have now been working with Kdb co-resident with K.CoSy . No problems .
Having Kdb ambient , I can look at its 671 objects with 595 unique names
" from the side " , if you if you will , and hope to avoid a lot of redundant
work , and maximize compatibility . For instance , I have started using
Kdb's .d.ds and .d.sd to convert timestamps to and from Kdb's format .
( Kdb's time handling functions are what I most covet . I know there's a lot
of brilliant experience there . )

So far , I have worked thru sequences to export dictionaries from K.CoSy
in the form of .kdb database files , and vise versa .
I have been reminded of the virtues and limitations of the relational model ,
ordered or not , which I have not dealt with since rewriting Xerox's WW
forecasting system when I first came east back in 1980 .
While it provides a useful discipline , it far more limited than K's natural
hierarchical structure , made ambient by K.CoSy .


Life is getting more back to normal here at Peck Slip , tho I'm worried
Con Ed may have designs on the wall holding their Haas tromp l'oeil mural of
the Brooklyn Bridge which has graced my view all these years . I've uploaded
a picture of what's happening to http://cosy.com/home.htm .


Til next time , Hoping happy holidays for all .


-- Bob Armstrong -- http://CoSy.com -- 212-285-1864
     K.CoSy Rapid Quantitative Modeling
        language and consulting
  ( Edition 1 ( origin 0 ) now available )
        2001/12/03 11:28:17

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