Re: multilevel lists

[Joe Beach]

Hi, 

There is also a way to make system calls from within Lout, and use their
output in the lout document. I have used this in the past to cut columns
from a data file for use in a graph. A similar technique could probably
be used to get the current date and time, and then add 36 hours to it.
Jeff Kingston once posted a sketch of a mydefs command to cut columns
from a file:

   def @Cols
     left cutopts
     right x
   {
      def @Filter { "cut " cutopts @FilterIn ">" @FilterOut }

      x
   }

and then you can write

   @Data { "-f4,2" @Cols {
   @Include { mydata.txt }
   }

You might be able to read about @Filter and make a mydefs definition to
calculate the dates that you want. 

Joe Beach

On Tue, 2005-03-01 at 17:23 +0100, Ludovic Courtès wrote:
> "Nick Kostirya" <address@hidden> writes:
> > So sorry.  Is there an analogue of the MS Word files available so that one
> > could model multi-level list numeration?
> 
> What do you mean by "MS Word files"?  Multi-level list numbering could
> certainly be implemented in Lout but I'm not skilled enough to tell you
> how this could be done.
> 
> > And apply mathematical manipulations?
> > For example, create a field to bring out teh result of date calculating by
> > adding 36 hours to the bookmarked date.
> 
> Lout (the language) is not a general purpose language and probably lacks
> quite a number of primitives or APIs to really program things like those
> you describe, or other things like fetching data from a database,
> processing the name of all the authors of all bibliography entries,
> things of that sort.  For this kind of things, I personally advocate
> Skribe which builds on a full-blown programming language (Scheme):
> http://www-sop.inria.fr/mimosa/fp/Skribe/ .
> 
> On the other hand, if you look for instance at the "Graphs" chapter of
> the manual, you'll see that a number of mathematical functions may be
> used in this context.  But those functions are actually provided by the
> back-end language, namely PostScript.
> 
> Thanks,
> Ludovic.