Start with targeted changes. Start with something narrow: "Add a test for this function." Stick to one file and one purpose until you trust it.
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美团之所以能从团购混战中突围，靠的不是先发优势，而是依赖一套可复制、落地性极强的方法论：战略清晰、执行凶猛、务实提效。，更多细节参见PDF资料
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