[plt-scheme] 2htdp/image

On Wed, Nov 18, 2009 at 3:31 PM, Matthias Felleisen
<matthias at ccs.neu.edu> wrote:
> Does anyone know if others have turned images into first-class values and what problems they encountered and how they solved them?

In the general case? There is a small literature on this in the
functional world. E.g.:

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.36.9799&rep=rep1&type=pdf
 (Pictures, 1995)
http://www.ecs.soton.ac.uk/%7Eph/papers/funcgeo2.pdf (Functional Geometry, 2002)

I don't recall any papers specifically addressing equality. The main
concern in my reading has been expressing constraints in the layout
(e.g. this box is twice as wide as the elements it contains).

HTH,
N.