On 19 Mar 2007, at 21:31, Jonathan Lang wrote:
Some (many?) enumerations represent cycles, where incrementing from
the last element takes you back to the first: the seasons, the months,
the days of the week, the hues, etc. How hard would it be to write a
module that lets you say something like:
enum weekdays is cycle <Sun Mon Tue Wed Thu Fri Sat>
So that Sat++ eqv Sun (and a resumable control exception is thrown so
that you can do something fancy whenever you return to the start of
the cycle)?
Another way of looking at that enum is as a simple state machine.
More complex state machines would be nice too. That is all :)
--
Andy Armstrong, hexten.net
