Borrow and mutable borrow checking
The entire pipeline executes in a single call stack. No promises are created, no microtask queue scheduling occurs, and no GC pressure from short-lived async machinery. For CPU-bound workloads like parsing, compression, or transformation of in-memory data, this can be significantly faster than the equivalent Web streams code — which would force async boundaries even when every component is synchronous.
，这一点在谷歌浏览器下载中也有详细论述
Армия обороны Израиля начала масштабную серию ударов по Ирану02:17
print("Caught an exception!");