Jonathan Cast
On Fri, 2009-04-10 at 07:29 +0400, Miguel Mitrofanov wrote:
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.
My programs are passing me around inside a state token?
Sure. http://en.wikipedia.org/wiki/File:8-cell.gif Inside and outside become quite mindboggling when dealing with more dimensions than you expect... -- (c) this sig last receiving data processing entity. Inspect headers for copyright history. All rights reserved. Copying, hiring, renting, performance and/or quoting of this signature prohibited.