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.
Трамп высказался о непростом решении по Ирану09:14
，详情可参考搜狗输入法下载
第五十七条 国家建立核损害赔偿责任制度，按照法律和国家有关规定处理核事故造成的损害。，这一点在同城约会中也有详细论述
Copyright © ITmedia, Inc. All Rights Reserved.，推荐阅读一键获取谷歌浏览器下载获取更多信息