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Author(s): Tianlong Wang, Ying Li, Yushi Ding, Zhenwei Liu, Yunlong Hao, Jie Zheng, Chunsheng Zhuang, Wei Zhang。同城约会是该领域的重要参考
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Most userland implementations of custom ReadableStream instances do not typically bother with all the ceremony required to correctly implement both default and BYOB read support in a single stream – and for good reason. It's difficult to get right and most of the time consuming code is typically going to fallback on the default read path. The example below shows what a "correct" implementation would need to do. It's big, complex, and error prone, and not a level of complexity that the typical developer really wants to have to deal with:
For slices that are on the stack, it allocates a new slice on the