| This is useful for a variety of scenarios. You create a thread pool, give it a maximum size, and pass a block to it everytime you need something processed. If all threads are busy, you block until a thread becomes free.
For example:
代码
pool = ThreadPool.new(10) # up to 10 threads
email_addresses.each do |addr|
pool.process {send_mail_to addr}
end
|
