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.

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

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> ?

I think that all of us are 5-year-olds and we don't want to be embarrassed in the schoolyard. I've gone through things in my life. People say it must be so hard to do it in the public eye, but the truth is, when you go through hard things, it's just hard.

You can't hide God in you. God was not meant to become part of you, and you hide out in the closet. I don't think He wanted that. I think He wanted people to see the Christ in you that reflects Him.

As an East Asian looking at America, I find attractive and unattractive features. I like, for example, the free, easy and open relations between people regardless of social status, ethnicity or religion.

I think paranoia can be instructive in the right doses. Paranoia is a skill.

I see my buildings as pieces of cities, and in my designs I try to make them into responsible and contributing citizens.

No, I am not a homosexual. If I were a homosexual, I would hope I would have the courage to say so. What's cruel is that you are forcing me to say I am not a homosexual. This means you are putting homosexuals down. I don't want to do that.

Being alive everyday is an enough blessing to celebrate everyday.

This world's anguish is no different from the love we insist on holding back.

There was hostility surrounding doing my job.

I like the purity of stand-up because it is all about whether people laugh at your jokes. Either they laugh or they don't.

Hard truths can be dealt with triumphed over but lies will destroy your soul.

Continuity gives us roots; change gives us branches, letting us stretch and grow and reach new heights.

No one shall expel us from the paradise that Cantor has created for us.

Love is the answer to everything. It's the only reason to do anything. If you don't write stories you love, you'll never make it. If you don't write stories that other people love, you'll never make it.

Tap dancing is all about the feet; you put your head down and don't really engage with anything but the rhythm in your head.

While the resurrection promises us a new and perfect life in the future, God loves us too much to leave us alone to contend with the pain, guilt and loneliness of our present life.

Stung by the splendour of a sudden thought.

Whoever it was who said that to philosophize is an exercise in dying was right in more ways than one, for by writing a book, nobody gets younger.

I was just an ordinary student. I'd always gotten along with authorities quite well.

An open enemy is better than a false friend

Once you appreciate one of your blessings, one of your senses, your sense of hearing, then you begin to respect the sense of seeing and touching and tasting, you learn to respect all the senses.