[Jscheme-user] stack overflow in {}

[Ken A. <kan...@bb...>]

Rusty an i have been data mining with lists of 35,000 items.
Things work reasonably OK as long as you don't print them as a list to 
EMACS without any line breaks.  I usually kill my Jscheme at that point and 
start over.

I've truncated error messages to 1000 characters which helps a lot with 
reporting bugs.  Perhaps we should have parameter that effects the REPL, to 
help reduce the cost of accidents.  Common Lisp had several, such as 
print-length and print-level, but one might work for us, were small.

We have one example of using {} to generate a web page, with at least a 
1300 row x 5 columns x 3 string
 > 19,500 Jscheme frames - leads to a stack overflow.  This seems pretty 
tiny, but
the simple experiement:
(define (grow n)
   (if (= n 0) '()
       (cons n (grow (- n 1)))))
(define (size n)
   (print n)
   (grow n)
   (size (+ n n)))
(size 1)

produces:
 > 1
2
4
8
16
32
64
128
256
512
1024
2048
An unrecoverable stack overflow has occurred.

We were able to rewrite the page in a dumb string-consing accumulator style 
and get the result we wanted.

Is there an alternative way we can write !{}?

k