[Haskell-beginners] Interrupting a thread
chaddai.fouche at gmail.com
Thu Dec 31 06:26:28 EST 2009
On Thu, Dec 31, 2009 at 9:21 AM, Floptical Logic
<flopticalogic at gmail.com> wrote:
>> You'll want something like this:
>> myFork :: StateT MyState IO () -> MyState -> StateT MyState IO ThreadId
>> myFork action initialState = liftIO (forkIO (evalStateT action
> That's not quite what I'm looking for. I don't want to create a new
> thread in which to run the monad but rather to be able to create
> threads from inside the monad (as a result of running the monad).
And that's what this code does. Do you want it to automatically use
the state of the monad ?
> myFork :: StateT MyState IO () -> MyState -> StateT MyState IO ThreadId
> myFork action = liftIO . forkIO . evalStateT action =<< get
keep in mind that nothing the thread will do will affect the state of
the main thread.
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