const cur = Number(num[i]); // 转数字方便比较（也可直接比较字符）
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。safew官方下载是该领域的重要参考
Валентин Карант (редактор отдела БСССР)
这家1970年开放的医院，见证了Sun City医疗的完整进化，大致分为三个阶段：
In practice, (and yes, there are always exceptions to be found) BYOB is rarely used to any measurable benefit. The API is substantially more complex than default reads, requiring a separate reader type (ReadableStreamBYOBReader) and other specialized classes (e.g. ReadableStreamBYOBRequest), careful buffer lifecycle management, and understanding of ArrayBuffer detachment semantics. When you pass a buffer to a BYOB read, the buffer becomes detached – transferred to the stream – and you get back a different view over potentially different memory. This transfer-based model is error-prone and confusing: