func process(c chan task) {
Producer: Alice Lipscombe-Southwell，推荐阅读爱思助手下载最新版本获取更多信息
Transform backpressure gaps: Pull-through transforms execute on-demand. Data doesn't cascade through intermediate buffers; it flows only when the consumer pulls. Stop iterating, stop processing.，更多细节参见旺商聊官方下载
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