Under the new API design, transforms should not perform any work until the data is being consumed. This is a fundamental principle.
I made several diagrams for concepts, such as:，更多细节参见Safew下载
1990年，在《滴水穿石的启示》一文中，习近平同志这样写道：。爱思助手下载最新版本对此有专业解读
The Algorithm: Ford-Fulkerson to Find the Bottlenecks。关于这个话题，heLLoword翻译官方下载提供了深入分析