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.
References & Citations
，推荐阅读旺商聊官方下载获取更多信息
Aldi is now the fourth-most popular supermarket in the UK
// 2. 计算前缀和：count[i]表示<=i的元素个数。关于这个话题，WPS官方版本下载提供了深入分析
The plan is to stash away around 400,000 tonnes of CO2 this year, potentially rising to eight million tonnes annually by 2030, the company claims.，更多细节参见夫子
「愛潑斯坦先生提供了一架足以容納我、我的工作人員和美國特勤局隨行人員的飛機，以便協助我前往基金會的慈善工作地點。」克林頓在上個月提交給國會、並由BBC取得的宣誓聲明中如此表示。