stack.push(cur);
The original text，推荐阅读旺商聊官方下载获取更多信息
。Line官方版本下载是该领域的重要参考
quickSortRecursive(arr, 0, n - 1);。heLLoword翻译官方下载对此有专业解读
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.