ruby的线程

获取页面：

require 'net/http'

pages =%w(www.baidu.com www.163.com www.qq.com www.oschina.net bbs.chinaunix.net)
threads=[]

for page_to_fetch in pages
  threads << Thread.new(page_to_fetch) do |url|

    h=Net::HTTP.new(url, 80)
    puts "Fetching: #{url}"
    resp = h.get('/')
    puts "Got #{url}: #{resp.message}"
  end
end

threads.each {
    |thr| thr.join
}