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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作为中国唯一千亿级研发投入企业，华为凭借1797 亿元的投入，超过了千万元区间及以下3404 家企业的研发投入总和（1355.97 亿元）。