Data lifecycle: 1. You call store.dispatch(action) 2. Redux store calls the reducer function 3. combine output of multiple reducer into on single state tree 4. Redux store returns the complete state tree (returned by the root reducer)

why JSX?

can you have more than one root dom nodes?

How do you render an element into the dom?

Are React elements mutable?

There are two ways of defining a component: as a function and as a ...

What is the advantage of a class component over a functional component?

How do you add local state to a class?

why are lifecycle hooks important?

Does redux work only with react?

Core concepts: actions reducers

what's an action for redux?

What's the purpose of a reducer?

what are the 2 params passed to a reducer?

what are the advantages of a single store?

How is Redux different from Flux?

advantage of immutability in Redux?

Redux architecture revolves around a strict unidirectional data flow.

Ex with a combineReducers() function todos(state = [], action) { // Somehow calculate it... return nextState } ​ function visibleTodoFilter(state = 'SHOW_ALL', action) { // Somehow calculate it... return nextState } ​ let todoApp = combineReducers({ todos, visibleTodoFilter })

React bindings for Redux embrace the idea of separating presentational and container components.

Container Components: How things work (data fetching, state updates) Dispatch Redux actions Are usually generated by React Redux

Presentational Components How things look (markup, styles) Invoke callbacks from props to change data Are written by hand

You could write a container component by hand, but we suggest instead generating container components with the React Redux library's connect() function, which provides many useful optimizations to prevent unnecessary re-renders.

To use connect(), you need to define a special function called mapStateToProps that tells how to transform the current Redux store state into the props you want to pass to a presentational component you are wrapping.

In addition to reading the state, container components can dispatch actions. In a similar fashion, you can define a function called mapDispatchToProps() that receives the dispatch() method and returns callback props that you want to inject into the presentational component.

Connecting react and redux: import { connect } from 'react-redux' ​ const VisibleTodoList = connect( mapStateToProps, mapDispatchToProps )(TodoList) ​ export default VisibleTodoList

Redux component <Provider> : is used to magically make the store available to all container components in the application without passing it explicitly. You only need to use it once when you render the root component:

How do you use <provider> ?

Myths which are believed in tend to become true.

The feet of the humblest may walk in the field Where the feet of the Holiest trod, This, then, is the marvel to mortals revealed.

I'm a believer in getting punched in the face. I know it sounds cliched, but to me, fighting is a metaphor for life.

Bottom line: if you show a genuine interest in learning about how others became successful, you can open up a world of opportunities.

Its all that the young can do for the old to shock them and keep them up to date.

A champion needs a motivation above and beyond winning.

The Pledge of Allegiance does not end with Hail Satan.

I would almost rather be in debt constantly than work with horrible people that I hate.

My little circle of friends know how twisted my brain is. I'm constantly reading and people always think, 'Ah, we didn't know that about you', but that's part of my charm.

Retirement at sixty-five is ridiculous. When I was sixty-five I still had pimples.

David Letterman is the best late-night talk show host right now, hands down, and has been since he first took the desk.

It would be fantastic to spend your whole life trying to pursue something and then finally, at the last moment, you achieve it. You know, instead of getting it in the middle of the pursuit and spending the second half giving it meaning.

By believing passionately in something that still does not exist we create it. The nonexistent is whatever we have not sufficiently desired.

Punk music is rebellious.

I'm tired of playing the brat.

There's only one movie in my career I've had regrets with cutting it shorter, and I think some scenes maybe I shouldn't have cut.

I consider exercise vulgar. It makes people smell.

There is a degree of confidence exhibited towards strangers in Sweden, especially in hotels, at post-stations, and on board the inland steamers, which tells well for the general honesty of the people.

My dad is an English teacher, and my mom is a textiles artist. My parents made my sisters and me feel that if we wanted to pursue something creative, it could be done. They've always been supportive of everything from the beginning.

I have one goal every single year, and that's to play every single game.

If my kids came to me and said, 'I'm gay,' I'd say, 'Son, I love you.' That's never at stake. Never, never, never at stake.