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Symbol() == Symbol()
// False

Symbol('abacaba') == Symbol('abacaba')
// False

// But
const s = Symbol('sym');
s == s
// True

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// string is a primitive data type
const name = 'Michael';
name.toUpperCase();
// toUpperCase is not a method; it does not mutate
// the original variable
console.log(name); // Michael

// instead, it returns a new one
const NAME = name.toUpperCase();
console.log(NAME); // MICHAEL

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class Car {
  constructor(make, model) {
    this.make = make;
    this.model = model;
  }
  
  start() {
    console.log('vroom');
  }
  

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function iAmAnObject() {}

console.log(iAmAnObject.name); // iAmAnObject
console.log(Object.keys(iAmAnObject)); // Array []

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// "class" declaration
function Car(make, model) {
  this.make = make;
  this.model = model;
}

// the start method
Car.prototype.start = function() {
  console.log('vroom');
}

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import React from 'react';
import { View, TextInput, StyleSheet } from 'react-native';
import {useSelector} from 'react-redux';

const StateViewer = (props) => {
  const formState = useSelector((state) => state.form);
  // Prettify the JSON code:
  const prettyFormState = JSON.stringify(formState, null, 2);
  return (
    <View style={styles.root}>

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import React from 'react';
import { Provider } from 'react-redux';
import store from './store';
import Form from './Form';

export default function App() {
  return (
    <Provider store={store}>
      <Form />
    </Provider>

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import React from 'react';
import { View, Button, TextInput, StyleSheet } from 'react-native';
import { Field, reduxForm } from 'redux-form';


const Form = (props) => {

  const { handleSubmit } = props;

  const onSubmit = (values) => console.log(values);

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import React from 'react';
import Form from './Form';

export default function App() {
  return (
    <Form />
  );
}

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import {combineReducers, createStore} from 'redux';
import {reducer as formReducer} from 'redux-form';

const rootReducer = combineReducers({
  // ... the rest of your reducers
  form: formReducer
});

const store = createStore(rootReducer);