dennisja

o_cache = {}


def fibonacci(num):
    if num == 0:
        return num
    if num == 1:
        return num

    if num in o_cache:

dennisja

cache = [0, 1]


def fibonacci(num):
    if num == 0:
        return num

    if num == 1:
        return num

dennisja

// We make use of ES6 imports
import React, { Component, Fragment } from "react";

// we make use of ES6 classes and inheritance
class TodoForm extends Component {
  // we make use of class variables to initialize state
  state = {
    todoName: ""
  };

dennisja

import React, { Component, Fragment } from "react";

class TodoForm extends Component {
  constructor(props) {
    super(props);
    this.state = {
      todoName: ""
    };

    this.handleInputChange = this.handleInputChange.bind(this);

dennisja

// assuming you are fetching data from a server returning a data structure shown below
const todos = [
  {
    id: 1,
    title: "Go Home",
    completed: false
  },
  {
    id: 2,
    title: "Say Hi",

dennisja

// assuming you are fetching data from a server returning a data structure shown below
const todos = [
  {
    id: 1,
    title: "Go Home",
    completed: false
  },
  {
    id: 2,
    title: "Say Hi",

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const Todo = ({ title, completed }) => (
  <div>
    {title}
    {completed && <span> Well Done</span>}
    {/* We use short circuting to conditionally determine what to render*/}
  </div>
);

dennisja

import React from "react";

// We use ES6 classed and inheritence
class Breweries extends React.Component {
  constructor() {
    // we use the constructor and call the constructor of the class we are in heriting from
    super();
    // we initialize state in the constructor
    this.state = {
      breweries: [],

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componentDidMount() {
    fetch("https://api.openbrewerydb.org/breweries")
    .then(function(respose){return respose.json()})
    .then(function(breweries){
      this.setState({ breweries, loading: false });
    }.bind(this))
    .catch(function(error){
      this.setState({ error, loading: false });
    }.bind(this));
}

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componentDidMount() {
  // store the current value of this in a variable
  const $this = this;
  fetch("https://api.openbrewerydb.org/breweries")
    .then(function(respose){return respose.json()})
    .then(function(breweries){
      // use the variable to setState
      $this.setState({ breweries, loading: false });
    })
    .catch(function(error){