Answer by jabacchetta for Why doesn't React automatically optimize...
I believe they hint at why in the advanced performance section of the documentation. Essentially, equality can't be accurately determined when using mutable data structures.
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Why doesn't React automatically optimize shouldComponentUpdate?
As we konw, if a component's parent has change its state, its all children components will do render vitual dom operation.The use dom diff to render. If you use shouldComponentUpdate function to judge...
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