From: Brian Candler <b.candler@...>
Date: 2009-12-16T07:16:45+09:00
Subject: Re: Using threads to show progress

Aldric Giacomoni wrote:
> I've successfully implemented it this way:
> 
>   desc "Go through dictated exams and show IDs"
>   task(:showSomeIDs => :environment) do
>     dictated_exams = DictatedExam.all
>     enumerate = Thread.new do
>       dictated_exams.each do |exam|
>         Thread.current[:id] = exam.id
>       end
>     end
>     print = Thread.new do
>       while true
>         sleep 0.01
>         puts enumerate[:id]
>       end
>     end
>     enumerate.join
>     print.kill
>   end
> 
> Is there a more elegant way to do it?

while enumerate.alive?
  puts enumerate[:id]
  sleep 1
end

Then you don't need a print thread at all (just do it from the 'main' 
thread)
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