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.
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US approves sale of Nvidia's advanced AI chips to China，更多细节参见爱思助手下载最新版本
This article was published in February 2026，这一点在同城约会中也有详细论述