[BULK] Re: [plt-scheme] More PLT Scheme as an Alternative to Matlab

On Aug 14, 2009, at 8:54 AM, Doug Williams  
<m.douglas.williams at gmail.com> wrote:

> You give me more credit for forward thinking than I deserve. I was  
> planning on having array-set!. I'm not sure how to avoid it at the  
> primitive level - I just won't have enough information at the time I  
> create the underlying vectors to make them immutable (and there are  
> no immutable SRFI vectors that I'm aware of).

I've just been spectating on this thread, but would there be a way to  
use laziness to create vectors that are initially all-undefined but  
can have individual entries defined later, only once?


Steve Bloch
sbloch at adelphi.edu