Question

我正在使用MVC，使用RSS从wired.com获取Feed。但我不需要所有的饲料，我只需要前五个饲料。我怎么能这样做？

with tf.device(tf.train.replica_device_setter(ps_tasks=2, ps_device="/job:ps", 
                                          worker_device="/job:worker")):
  v1 = tf.Variable(1., name="v1")  # pinned to /job:ps/task:0 (defaults to /cpu:0)
  v2 = tf.Variable(2., name="v2")  # pinned to /job:ps/task:1 (defaults to /cpu:0)
  v3 = tf.Variable(3., name="v3")  # pinned to /job:ps/task:0 (defaults to /cpu:0)
  s = v1 + v2            # pinned to /job:worker (defaults to task:0/cpu:0)
  with tf.device("/task:1"):
    p1 = 2 * s           # pinned to /job:worker/task:1 (defaults to /cpu:0)
    with tf.device("/cpu:0"):
      p2 = 3 * s         # pinned to /job:worker/task:1/cpu:0

Answer 1

您可以使用Enumerable.Take（int）。返回指定数量的元素

IEnumerable<RSSFeed> RSSFeedData = (from x in xml.Descendants("item")
                           select new RSSFeed
                           {
                               Title = ((string)x.Element("title")),
                               Link = ((string)x.Element("link"))
                           }).Take(5);

这里的文档 https://msdn.microsoft.com/it-it/library/bb503062(v=vs.110).aspx

RSS获得前五项

1 个答案: