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.
ghci :set prompt ""，这一点在体育直播中也有详细论述
// 步骤3：遍历排序后的位置，用单调栈判断独立车队。关于这个话题，夫子提供了深入分析
Что думаешь? Оцени!