Across all three versions, there’s a mockToString or spoof helper. But the V3 implementation is subtly more robust than the V2 one, and it’s worth examining why.
Logicians and their bonnets
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tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
即便竞争环境复杂多元，但中国市场仍然有着巨大拓展的空间和增长机会。从麦当劳到肯德基，其拓展策略都在指向同一个方向——高强度扩张不会暂停，但增长逻辑已从 “单纯拼开店数量” 转向 “规模与效率并重”。