Paul and Paige said they did not know how much money they might receive.
He said: "Wear a leek, eat a leek. Wear a daffodil. Eat a Welsh cake. Share a cwtch (a cuddle). Dydd Gŵyl Dewi Hapus iawn, have a very happy St David's Day."，更多细节参见91视频
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.。关于这个话题，safew官方版本下载提供了深入分析
* @param n 数组长度