有点意思，就是不知道性能和稳定性怎样。看 GitHub 貌似项目开始挺早了。

http://www.sitepoint.com/agent-go-like-concurrency-ruby/

require 'agent'

chan = channel!(Integer)

go! do
  #the program should only end
  #when this goroutine ends
  sleep 10

  puts "Hello, world!"
  chan << 1
end

puts chan.receive.first

项目主页：https://github.com/igrigorik/agent