看起来，苹果似乎真的没必要给 MacBook 装上一个触控屏——只是，时代变了。
const realIdx = i % len; // 取模映射到真实数组索引，模拟循环
。91视频对此有专业解读
The trade-off is performance. Every syscall goes through user-space interception, which adds overhead. I/O-heavy workloads feel this the most. For short-lived code execution like scripts and tests, it is usually fine, but for sustained high-throughput I/O, it can matter.
They also said autism "can be a barrier but it can also be a strength" but many employers do not understand this.
// Sync — when all components are synchronous