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:

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

How do you use <provider> ?

You can't just take care of everybody else all the time.

Climate change means catastrophically violent weather.

I have been defending Israel's right to exist, and to defend itself against terrorism, for many years-on college campuses, in television appearances and in debate.

I felt like for what I needed, Bad Boy got me... they got me covered. Especially Puff, man. He's going to be the first billionaire rap entertainer. At the end of the day, they need me. Other artists-labels don't need me, but Bad Boy and Puff needs me. And I need them. It goes both ways.

Fortunately there is a solution and its not performing multiple sets of whatever cable Kegel exercise is being pushed as The Answer. Just a little hard smart basic work.

I made good grades in school.

I never get scared making these kinds of movies because it's all make-believe, but I did cry when I saw the finished version of Man On Fire because it is so sad.

I'm not a fan of anybody music who I feel like a sucka. I don't listen to you. They play you in the club, you can have the #1 jam, but if I know your character, how can I listen to your music?

The problem with the Internet is that it gives you everything - reliable material and crazy material. So the problem becomes, how do you discriminate?

Israel is a piece of real estate that neither Jew or Arab will let go of; neither will leave these shores. And so they will have to learn to live together.

I trust people too much, and the other tragedy is I can't say no.

My dad has a really great record collection that basically went up to the year I was born: 1984.

As someone from a developing country, I have a problem with rich countries thinking they can tell us anything, simply because they are giving money.

People are mistaken to view cinema as some sort of gimmick. It's very much ingrained in the ways in which we understand each other.

Sometimes the most important thing in a whole day is the rest taken between two deep breaths.

That was part of coaching: to teach your receivers how to get free.

Make your interests gradually wider and more impersonal, until bit by bit the walls of the ego recede, and your life becomes increasingly merged in the universal life.

Man's greatest blunder has been in trying to make peace with the skies instead of making peace with his neighbors.

The poor are prevented from thinking by the discipline of others the rich by their own.

I learned that you can make a sci-fi film that is satisfying overseas. European people have everything in check. I'd make every sci-fi film in Europe. They only work 14 hours a day. After that, it's overtime.

Love is a positive, symbiotic, reciprocal flow between two or more entities.