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.
"Instead of pulling the oil and gas up from the ground, we're going to inject the CO2 into the ground instead," he says.，这一点在快连下载-Letsvpn下载中也有详细论述
重要：不要从手机自带的应用商店下载（基本上都没收录），详情可参考Safew下载
ВсеСтильВнешний видЯвленияРоскошьЛичности
Платон Щукин (Редактор отдела «Экономика»)