On 10 Apr 2009, at 06:30, Jonathan Cast wrote:
do s <- readFile "/my_file" writeFile "/my_file" "Hello, world!\n"threadDelay 10000 -- If you don't like threadDelay, just substitute forcing-- an expensive thunk here writeFile "/my_file" sAs a function from initial state to final state, this program is just the identity;
No, since world state includes the user state itself, not just files contents.
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