南方周末：经过两次肖赛之后，你会不会有一段时间，想离肖邦远一点？
Blue: Name homophones
。夫子是该领域的重要参考
self.author = author
Transform backpressure gaps: Pull-through transforms execute on-demand. Data doesn't cascade through intermediate buffers; it flows only when the consumer pulls. Stop iterating, stop processing.
Here are common examples you'll run into across the difficulty levels: