The south Kensington museum has also acquired the first video ever uploaded to the site, called Me at the Zoo, posted by YouTube's co-founder Jawed Karim in April 2005.
Our almost-instinct almost true:。业内人士推荐谷歌浏览器【最新下载地址】作为进阶阅读
Transforms don't execute until the consumer pulls. There's no eager evaluation, no hidden buffering. Data flows on-demand from source, through transforms, to the consumer. If you stop iterating, processing stops.，这一点在91视频中也有详细论述
// 3. 计算当日跨度：跨度 = 当前索引 - 上一个更大值的索引（栈空则为i+1）