Adrian Hey wrote:
The problem is simple enough to restate for anyone who's interested.
"Provide a simple reliable mechanism to ensure that in a given
program run one particular top level IO operation cannot be executed
more than once."
No language can guarantee this - all I have to do is run 2 copies of the executable at once... or wven sequentially!
Keean. _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
