From: Michael Boutros <me@...>
Date: 2008-07-15T03:03:18+09:00
Subject: Re: Ruby & Threads

Joel VanderWerf wrote:
> Michael Boutros wrote:
>>       puts "Starting #{number}...\n"
>>       sleep(5)
>>       holder << number
>>     end
>>   end
>> end
>> 
>> @thread.join
> 
> #join is definitely a good idea, because otherwise (as you observed) the
> main thread will exit before the others have finished, but you are
> overwriting the @thread variable on each iteration through the loop.
> 
> The usual idiom for this is something like:
> 
> threads = array.map { Thread.new {...} }
> threads.each {|th| th.join}

Joel,

Initially I meant to do that because I thought that I would only need to 
"join" one thread to get them all to continue, until I realized that 
some might finish before others, so I altered the code to the method 
that you described.
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