candidate.weight = 1.0 / distance to candidate
Back in 2008, Dr Selvarani Elahi was caring for her newborn daughter while growing horrified about the scandal of melamine-tainted infant formula in China. At least six babies died from kidney damage linked to the chemical.
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module: web/app/xxx，详情可参考51吃瓜
Before diving into API design, it's worth asking: what is a stream?