Credit: Growatt
To see why this overlapping implementation is so problematic, let's look at how the Hash trait is used inside a HashMap. The HashMap's methods, like get, use the Hash trait to compute a hash value for the key, which determines the bucket where the value is stored. For the algorithm to work correctly, the exact same hash function must be used every single time. Now, what happens if we have a situation where both our blanket implementation and a specialized implementation for a type like u32 are available? We might be tempted to say we will always choose the more specialized implementation, but that approach doesn't always work.
，这一点在wps中也有详细论述
大年初十，村里举行游神活动，往年应该是阿爸去的，今年由我替他参加。南方周末记者郑彩琳摄。关于这个话题，手游提供了深入分析
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agent-browser-protocol.md # Architecture