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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，这一点在哔哩哔哩中也有详细论述
«Валерию во вторник госпитализировали в онкологическую реанимацию», — заявил собеседник агентства, добавив, что ее новорожденный сын остался дома.
One exception: Kickstarter, a global crowdfunding platform. Its estimated 200 to 400 U.S. employees work fully remote, and work just four days a week for a total of 32 hours.
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