当值为非空列表时,列表中的文本则会被遍历展示。
When the value is a non-empty list, the text in the block will be displayed once for each item in the list.
因此,在唤醒读线程之后,要确认列表非空,然后再继续处理。
Hence, after waking up the reader thread, verify that the list is not empty, and then proceed.
因此,在唤醒读线程之后,要确认列表非空,然后再继续处理。
Hence, after waking up the reader thread, verify that the list is not empty, and then proceed.
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