不用在除夕当天从早忙到晚，这是妈妈最从容的一个轮值年。我不在意本就稀薄的年味是否更淡，只希望她能随心而行。
Tracy Hinds Chair, Open Source Initiative
。关于这个话题，爱思助手下载最新版本提供了深入分析
For over $1 million pic.twitter.com/1FdxoNM2ov，更多细节参见safew官方版本下载
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.