Re: Y Store /Closures

[Sundar Narasimhan <address@hidden>]

Mike: Actually, I'd like to know precisely how closures in a language
or how some other features (such as continuations) help build web apps
that cannot be done in other languages w/out such features. Note I say
web apps -- not all apps.

(If people can't prove impossibility, I'd also like to know precisely
why things will perhaps be orders of magnitude more difficult).

Thanks. 

ps. I'll confess to being ignorant (maybe because I hack zope and
session state w/ j2ee and oracle -- I don't think of maintaining state
across web hits as that interesting and could be done in oh 20
different ways.. but maybe there's something about an innovative use
of these features I'm missing).

--
   Maybe because they didn't understand either how to implement them or why
   they're important?  ;-)

   Only half joking...

   Mike

   > From: eli rosenberg <eli.rosenberg@verizon.net>
   > Date: Thu, 27 Feb 2003 10:58:41 -0600
   > 
   > Hi,
   > In accordance with Greenspun's 10th rule, why
   > didn't they add closures to their run time environment?
   > Any number of books cover implementations of 
   > closures and nested scoping (as in Pascal)...
   > 
   > 
   > > 
   > > From: Paul Graham <pg@archub.org>
   > > Date: 2003/02/25 Tue AM 07:19:36 CST
   > > To: mvanier@cs.caltech.edu
   > > CC: ll1-discuss@ai.mit.edu
   > > Subject: Re: Y Store now C++
   > 
   > > 
   > > BTW, I should add that most Y Store users still probably
   > > use the Lisp version at this point.  They're doing a 
   > > gradual rollout, and you have to explicitly choose to
   > > "upgrade" to the new version.  The feature they had to take
   > > out because of closures is actually a fairly important one,
   > > so I suspect many users never will upgrade.  
   > > 
   > > --pg
   > > 
   >