On 26/04/13 13:03, MRAB wrote:
But there _is_ an ordering problem, in that the days wrap around.
Do we want a CircularEnum, then?
Ordering would be defined only up to the starting
value, which you would be required to specify when
doing anything where it mattered.
class Day(CircularEnum):
sunday = 0
monday = 1
...
saturday = 6
list(Day.startingat(Day.tuesday)) -->
[Day.tuesday, Day,wednesday, Day.thursday,
Day.friday, Day.saturday, Day.sunday,
Day.monday]
Modular arithmetic would apply, so
Day.saturday + 3 --> Day.tuesday
That would be the replacement for Day(3),
which would be disallowed.
--
Greg
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