Aha! i see what you are saying thank you for pointing the real
subtleness of the way command is return,
this group is really excellent and awesome in helpfullness

On Aug 6, 11:51 am, Armando Blancas <armando_blan...@yahoo.com> wrote:
> In addition to that, prnTime should have no parens:
> #(on-thread prnTime)
>
> As it was, prnTime was running before going into on-thread, which was
> acting on a runnable that's nil (the return value of prn). The
> difference between the two can be seen in the output. When prnTime
> runs inside the threads, its output gets mixed up with thre repl, as
> you'd expect.
>
> user=> (r4t #(on-thread prnTime))
> 1281109289923
> nil
> 1281109289939
> 1281109289939
> user=> 1281109289939
>
> (r4t #(on-thread (prnTime)))
> 1281109301705
> 1281109301705
> 1281109301705
> 1281109301705
> nil
>
> On Aug 6, 5:34 am, Nikita Beloglazov <nikelandj...@gmail.com> wrote:
>
>
>
> > Hi, foop
> > Your error in this line:
> > (r4t (on-thread (prnTime)))
> > You pass to function r4t thread instead of functions. Because
> > (on-thread (prnTime)) returns thread
> > You must pass #(on-thread (prnTime)) instead
>
> > Regards,
> > Nikita Beloglazov
>
> > On Fri, Aug 6, 2010 at 3:13 PM, foop1 <bsmd...@gmail.com> wrote:
> > > Hi,
>
> > > Iam trying to run a function in a thread assuming that threads are
> > > runnable, below is my program i want to print 4 time the current date
>
> > > (defn- on-thread [f]
> > >          (doto (Thread. #^Runnable f)
> > >            (.start)))
>
> > > (defn prnTime [] (prn (System/currentTimeMillis)))
>
> > > (defn r4t [f]
> > >  (dotimes [n 4] (f)))
>
> > > (r4t (on-thread (prnTime)))
> > > iam getting this error what is wrong with this ?
> > > java.lang.Thread cannot be cast to clojure.lang.IFn
>
> > > Pls let me know what is wrong and how to make it run in 4 threads so
> > > that i can see 4 time the system print to the screen
>
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