From: "Ara.T.Howard" <Ara.T.Howard@...>
Date: 2005-10-29T08:16:10+09:00
Subject: Re: What would it take to change the behaviour of variable assignment?

On Sat, 29 Oct 2005, Daniel Nugent wrote:

> Bah, that example wasn't good either....
>
> foo = DataFlow.new
>
> bar = Thread.new(foo, "Monitor Thread") {|params| print params[1] + ":
> " + params[0]}
>
> sleep(3)
>
> baz = Thread.new(foo, "Sleepy Thread") do |params|
> print params[1] + ": Going to sleep."
> sleep(3);
> params[0] = "Hello World, sorry I'm late"
> end

   harp:~ > cat a.rb
   require 'thread'

   STDOUT.sync = true

   class DataFlow
     def slots
       @slots ||= Hash::new{|h,k| h[k] = Queue::new}
     end
     def [] idx
       slots[ idx ].pop
     end
     def []= idx, val
       slots[ idx ].push val
     end
   end

   counter = Thread::new{ 42.times{|i| puts i; sleep 1} }

   foo = DataFlow::new

   bar = Thread::new(foo, "Monitor Thread"){|df, label| puts "#{ label } : #{ df[0] }"}

   sleep 3

   baz = Thread::new(foo, "Sleepy Thread") do |df, label|
     puts "#{ label } : Going to sleep."
     sleep 3
     df[0] = "Hello World, sorry I'm late"
   end

   bar.join
   baz.join


> --output--
> [3 second pause]
> "Sleepy Thread: Going to sleep."
> [3 second pause]
> "Monitor Thread: Hello world, sorry I'm late"


   harp:~ > ruby a.rb
   0
   1
   2
   Sleepy Thread : Going to sleep.
   3
   4
   5
   Monitor Thread : Hello World, sorry I'm late


i still don't understand your problem?  sorry!  ;-)

-a
-- 
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| email :: ara [dot] t [dot] howard [at] noaa [dot] gov
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