How do you use <provider> ? — you wrap it around <App> and you pass a store object to its store prop.

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.

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)

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:

I'm very competitive by nature. And I like to be the underdog - It's the best way to win. To come from behind and win is a great feeling!

What a holler would ensue if people had to pay the minister as much to marry them as they have to pay a lawyer to get them a divorce.

The prostheses do not run the race on their own: there is an athlete who does the work, and the prosthetics do not make a significant difference to the time.

Whether or not you believe in God, He always believes in You!

I have no regrets, because I've done everything I could to the best of my ability.

For only as we ourselves, as adults, actually move and have our being in the state of love, can we be appropriate models and guides for our children. What we are teaches the child far more than what we say, so we must be what we want our children to become.

I know it's hard for people to imagine a time when 'Hamilton' wasn't 'Hamilton,' but for years, it was just this little thing that I was telling people about that didn't make any sense to anybody as I was describing it. But I loved it.

In my childhood I always felt that I was treated unjustly, without a mother, sick, and with the threat of punishment in Hell hanging over my head.

The writer, the poet, the novelist, are all creators. This does not mean that they invent language; it means that they use language to create beauty, ideas, images. This is why we cannot do without them.

I can't stand the idea of being demagogued: that is, put down by a president who has never created any jobs and who doesn't even understand how the economy works.

Juan Tripp was a friend. Good name for an airline man, huh? Juan Tripp after another?

When I go to business meetings, I'm still told way too often by some receptionist, 'The mail room is downstairs,' to believe that racial perceptions don't still exist. But I figure there are always going to be knuckleheads no matter how many of their herd get stuck in the tar pits of progress.

Those people who shun us just because of the label we're on, or the fact that we've got a video out there that's getting us somewhere, are only limiting themselves, because they aren't keeping an open mind.

It's impossible, I think, however much I'd become disillusioned politically or evolve into a post-political person, I don't think I'd ever change my view that socialism is the best political moment humans have ever come up with.

I have a whole iPod full of exceptionally bad music, truly awful stuff including a disproportionate number of one hit wonders from the early '80s and lots of hair bands. I find it utterly impossible to love a song until I know every single word, so listening to live music or new bands is pretty much out.

You never know when you start a project just how good it can be.

My dream role is to play in a story of how the Joker became the Joker, and I would play the young Heath Ledger.

I love my mother. She's my first love. She has been through a lot and is a sole survivor.

For whoever is lonely there is a tavern.

Youth is quick in feeling but weak in judgement.

Make your lives a masterpiece, you only get one canvas.