ANNOUNCE: attribute 0.1

ajb at ajb at
Thu Nov 13 20:12:01 EST 2003

G'day all.

Quoting Ross Paterson <ross at>:

> For an alternative design, see

The problem with this design is that there may, in general, be more than
one "interesting" kind of Ref on a given state monad.

For example, I often use my own IORef-like class which supports the
Ord interface.  Others might want IORef-like objects which support
Hashable, or Show.

Andrew Bromage

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