"To do this in a highly competitive market, we must be efficient and agile in how we run our business.
"enhanced_telemetry_beta": false,
，这一点在同城约会中也有详细论述
描述：prices[i] 为第 i 件商品价格。第 i 件商品可获得折扣 prices[j]，其中 j 是满足 j i 且 prices[j] <= prices[i] 的最小下标；若无则无折扣。返回每件商品折扣后的最终价格。
.pipeTo(slowSink); // Buffer grows without bound