Ix class

[Jan Skibinski]

On Tue, 15 May 2001, Matt Harden wrote:

[..]

> I would like _any_ pair of Ints to be an acceptable boundary for the
> honeycomb, not just the ones that represent valid indexes.  For example,
> (Hx (0,0), Hx (15,12)) should be a valid set of bounds.  The current
> definition of rangeSize makes this impossible, which is why I would like
> to override it.  By the way, the Library Report does not explicitly say
> that the bounds have to both be valid indexes, though it does imply this
> with the sample definition of rangeSize.

	There is an old article [1], that is somehow related to
	what you do. Looks like it could add some extra fuel to your
	arguments if re-examined in terms of current Haskell.

	[It might be also interesting to those discussing arrays
	in the other thread.] 

	Jan

	[1] D.B. Carpenter, Some Lattice-based Scientific Problems,
	Expressed in Haskell, http://citeseer.nj.nec.com/157672.html