useReducer hook complete explanation | React official docs full walkthrough guide

Published: 26 October 2022
on channel: xplodivity

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In this video I go through the entire information provided about the useReducer hook in the official react documentation.

0:00 - Intro
0:37 - What is useReducer and reducer?
3:35 - how useReducer works + example
06:18 - visualising difference between useState and useReducer
08:39 - how to access state in reducer function
09:09 - what is dispatch, its use and how to use it
13:56 - writing logic for reducer function
19:06 - imp Note for dispatch
20:16 - ways to specify initial state in useReducer
20:40 - state initialization comparison with redux
21:44 - lazy initialization
25:38 - bailing out of a dispatch
27:16 - performance benefit of useReducer
30:41 - End

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