"Roberto's book..."

[Asko Kauppi <Asko.Kauppi@...>]

Is that publicly available and if so, where? 
I would be interested but don't find a link anywhere.

-ak

--
Asko Kauppi
Flextronics Design Finland
Box 23, 39201 Kyröskoski, Finland
www.flextronics.com 


> -----Original Message-----
> From:	Diego Nehab [SMTP:diego@tecgraf.puc-rio.br]
> Sent:	Monday, May 27, 2002 11:57 PM
> To:	Multiple recipients of list
> Subject:	Re: [lua-l] Digest Number 734
> 
> > I feel awfully stupid, but could anyone explain (or give a reference 
> > for) what a "closure" is?
> 
> In Lua, from the C API point of  view, a closure is an object created by
> the association of a function object and a set of data values. To create
> a closure,  use the lua_pushcclosure  API function. When the  closure is
> called,  the associated  function  is called  and  these values  (called
> upvalues) can then  be accessed directly from the top  of the stack (Lua
> 4.0), or with special indexes (Lua 4.1 on).
> 
> The  question was  if it  was possible  to extract  the upvalues  from a
> closure without calling the closure.
> 
> For some nice uses of closures, check the Wiki or Roberto's book.
> 
> Best regards,
> Diego.
> 
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