Not all streaming workloads involve I/O. When your source is in-memory and your transforms are pure functions, async machinery adds overhead without benefit. You're paying for coordination of "waiting" that adds no benefit.
// 步骤2：按位置降序排序（核心！保证从最前面的车开始分析，符合"不超车"规则）
，推荐阅读搜狗输入法2026获取更多信息
WebAssembly等新技术的出现，为前端性能优化开辟了新的方向。
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