Application State with Redux

Reading

Dan Abramov Redux Tutorials

• What is the first principle of Redux?

  • start with creating a singleton for storage

• what is a store and what do we use our reducers for within that store?

  • The Redux store brings together the state, actions, and reducers that make up your app

• Name three Redux store methods given to us by createStore and describe their use.

  • reducer (Function): A reducing function that returns the next state tree, given the current state tree and an action to handle.

• [preloadedState] (any): The initial state. You may optionally specify it to hydrate the state from the server in universal apps, or to restore a previously serialized user session. If you produced reducer with combineReducers, this must be a plain object with the same shape as the keys passed to it. Otherwise, you are free to pass anything that your reducer can understand.

• [enhancer] (Function): The store enhancer. You may optionally specify it to enhance the store with third-party capabilities such as middleware, time travel, persistence, etc. The only store enhancer that ships with Redux is applyMiddleware().

• Explain to a non-technical recruiter what combineReducers() does and why it is useful.

  • As your app grows more complex, you’ll want to split your reducing function into separate functions, each managing independent parts of the state.

Bookmark and Review

worlds easiest guide to redux

testing reducers

Redux Docs

Additional Questions

• Looking ahead at this module’s course schedule, What do you look forward to learning?

  • I’m really just focusing on DSA and getting comfortable with whiteboards

• What are your learning goals after reading and reviewing the class README?

  • My goals remain the same and I want to be proficient in what we’re learning and prepare myself for the whiteboard interview