[racket] for/hash: bad syntax in: for/hash

On Jan 4, 2012, at 10:40 AM, Marijn wrote:

> Basically,
> my idea was to transform:
> 
>  (dependent-boxes
>   ((a)
>    (b (* 2 a))
>    (c (+ 2 a b))))
> 
> into something which would automatically propagate changes in any
> cell/box to any other box which was dependent on it. Pretty much
> exactly like a spreadsheet does. As target for that transformation I
> had chosen something like:


I'd like to recommend FrTime (father time) because this is 
exactly what you want and people have implemented a spreadsheet
in it. It is a #lang and, its implementation uses macros like the
one you had in mind. 

-- Matthias