[Oz] Help: Lazy evaluation ..

[P Ravi Prakash]

Hi,
 
I want to use the lazy evaluation feature of Oz.
 
If I execute the code given below, it prints 2 in the browser and says
"Virtual memory exhausted." I am using Oz2. I am expecting it to
evaluate only the first three elements of the list.
 
Could some one please point out what is the mistake I am making?
 
Regards,
 
Ravi
 
----------------------------------------------------------------------------
\feed prelude
\feed Modules
 
declare
 
fun {GenWrap}
thread {Gen 1} end
end

fun {Gen N}
  N|{Gen N+1}
end
 
K = {GenWrap}
 
{Browse {Nth K 2}}
{Browse {Nth K 3}}
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  +-------------------------------------------------------------------------+
  |P Ravi Prakash,  KBCS Division         : Email: ravi at konark.ncst.ernet.in|
  |National Centre for Software Technology: Phone: 620 1606 x 41, 12 =======|
  |Gulmohar Cross Road 9, Juhu            : Fax: 022-621 0139 ==============|
  |Mumbai - 400 049, INDIA                : ================================|
  | 			Web: http://konark.ncst.ernet.in/~ravi/             |
  +-------------------------------------------------------------------------+

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