9 Apr
2009
9 Apr
'09
11:29 p.m.
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" s
As 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.