To achieve usable performance, every major runtime has resorted to non-standard internal optimizations for Web streams. Node.js, Deno, Bun, and Cloudflare Workers have all developed their own workarounds. This is particularly true for streams wired up to system-level I/O, where much of the machinery is non-observable and can be short-circuited.
w = csv.DictWriter(
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Жители Санкт-Петербурга устроили «крысогон»17:52
（三）船舶抵押权未登记的，按照担保的债权比例受偿。