[Haskell-cafe] DiscreteMap

[Henning Thielemann]

In addition to the former discussion:
 http://www.haskell.org/pipermail/haskell/2002-October/010629.html

Has someone thought about a type class that provides a uniform interface
to Array and FiniteMap? The difference to a general Function class is that
a DiscreteMap could return its domain, that is the list of all of its
keys/indices/arguments.