How do you add local state to a class? — 1. in render(), replace this.props.yourProp with: this.state.yourProp 2. add a class Constructor and initialize this state in it, such as: constructor(props){ super(props); this.state = {yourProp: "whatever"}; } 3. remove the prop from the element:

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?

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:

How do you use <provider> ?

Judaism for me is a sensibility of collective self-questioning and uncomfortable truth-telling. I feel a debt of responsibility to this past. It is why I am Jewish.

I am going to be announcing today that we will have a business delegation come to this country sometime in the future where we will bring businesses from America to Morocco to show them the vast business opportunities here.

Only God is the same yesterday, today and tomorrow. The Church has always been changing.

One side-effect of the so-called war on terror has been a crisis of liberalism. This is not only a question of alarmingly illiberal legislation, but a more general problem of how the liberal state deals with its anti-liberal enemies.

I truly, truly believe that I was going in that direction and all of a sudden fate took me and put me here. It's like something else has other plans for me.

It's a terrible thing for a book, when you feel like you're supposed to like it.

There is something wrong with our culture when the view that marriage is between one man and one woman, a view shared by half the nation, is portrayed as evidence of hatred.

Change has a bad reputation in our society. But it isnt all bad not by any means. In fact change is necessary in life to keep us moving ... to keep us growing ... to keep us interested . ... Imagine life without change. It would be static ... boring ... du

I had a wall around me and a lot of fantasy locked inside.

War is the trade of Kings.

Given that my title at Google is Chief Internet Evangelist, I feel like there is this great challenge before me because we have three billion users, and there are seven billion people in the world.

I like to think the price I paid by being open about my private life helped.

Bonnie and Clyde grew up in absolute poverty. They didn't go to school or have any money; the only way they could figure out how to get ahead was to steal. The banks were foreclosing on everyone's homes. I think a lot of people will be able to relate to that struggle.

I always wanted to have a headphone line but I feel like Im going to do more than just headphones eventually but we want to wake the world up right now with this.

I knew I wanted to do something creative, and you don't necessarily go to Harvard to do that. It's not the best choice for creative writing.

I try to watch a movie a day, if not more, and through movies, I learned about so many different political themes I hadn't been interested in and cultural things I hadn't been aware of and economic factors I hadn't thought about.

People should think things out fresh and not just accept conventional terms and the conventional way of doing things

You know what I like to do on a Sunday morning? Clean my house. I really enjoy it; it's my ritual. I require tidiness, actually. I have to have everything spotless before I can relax.

Prayer is an august avowal of ignorance.

Even if toxic people are right about what is "good," they are wrong if the approach is not healthy.

If rock & roll is dead and gone, man, I am missing out on it.