How do you render an element into the dom? — you pass both element and root DOM node to ReactDom.render() ReactDOM.render(element, document.getElementById('root'))

why JSX?

can you have more than one root dom nodes?

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:

How do you use <provider> ?

My main hope is eventually, in modern education field, introduce education about warm-heartedness, not based on religion, but based on common experience and a common sort of sense, and then scientific finding.

You're in the game of life to fight. If you're in business, and you're not aggressively building, you shouldn't be in.

As a comedian, it really gelled when I started doing standup. Because standup is so much about bravery, especially in the early days. There is no doubt that it is going to go terribly for you over and over and over again. But you cannot get funny without bombing.

People wrote me off, but I believed in myself. I got the confidence back, and it grew and grew. I won my first major and my last at the place that changed my life.

Everybody dies but some spend a whole life digging their grave.

Suspense: the only literary tool that has any effect upon tyrants and savages.

Every time somebody calls me out or tries to start something, it's motivation.

It took me a long time to know enough about writing to really write short stories. You can't just immerse yourself, as you do in a novel, and see where everything goes. Novels are a very flexible, accommodating form. Short stories aren't.

In fact, my courage and my bravery at a young age was the thing I was bullied for, a kind of 'Who do you think you are?'

Humans have a proven track record in taking over planes by the use of threats, which work because the legitimate pilots value their own lives and those of their passengers.

It's really been a better situation for me being with the Crush than it would if I were with the Broncos because this has given me a lot more broad range.

It is the framework which changes with each new technology and not just the picture within the frame.

The construction of life is at present in the power of facts far more than convictions.

Economic growth is necessary to keep the promise - enormously important to individual Americans - that each generation will have the opportunity to become more prosperous than the preceding one, the popular term for which is 'the American dream.'

Hands-on experience is the best way to learn about all the interdisciplinary aspects of robotics.

There are far, far better things ahead than any we leave behind.

It is impossible to live without love. You must have the feeling of being loved.

Waves, once they land on the beach, are not reversible.

I have fun writing. I don't make it a chore. I don't have to struggle with it.

There are physicists, and there are string theorists. Of course the string theorists are physicists, but the string theorists in general will not attend lectures on experimental physics. They will not be terribly concerned about the results of experiments. They will talk to one another.

If you change the way you look at things the things you look at change.