Setting state in class components | Class Components in React tutorial

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amazing videos. very easy to follow and helps greatly! thank you very much

mrhouse
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You are using this key words inside arrow function . Please explain it too.

kdg
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Thanks for explain. I have one question here, how value is coming in preState inside setState, we are not passing anything from anywhere. Can you please explain?

YogeshMalik-eejd
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from where we are receving data in callback at line 11 prevState

qureshiowais