sammylupt

const noop = () => {}

function formatProductForRequest(product) {
  // ...
}

export function addToCart(product, onSuccess = noop, onFailure = noop) {
  return (dispatch, getState) => {
    dispatch(cartAddAttempt(())

sammylupt

import { addToCart } from "shared/lib/actions"
 
class ProductContainer extends React.Component {
  // ...

  addToCart(product) {
    const { dispatch, navigator } = this.props

    return dispatch(addToCart(product, () => {
      const route = Router.getCartRoute()

sammylupt

HappyNumberFinder.find(400) #=> ????

sammylupt

HappyNumberFinder.find(49) #=> {:happy}

sammylupt

IO.puts(“The number is #{number}”)

sammylupt

HappyNumberFinder.find(49)  #=> {:happy}
HappyNumberFinder.find(324) #=> {:unhappy}

sammylupt

defmodule HappyNumberFinder do

  def find(number) when number > 0 do
    _find(number, [])
  end

  defp get_sum(number) do
    number
    |> Integer.digits
    |> Enum.map(fn(x) -> x * x end)

sammylupt

defmodule HappyNumberFinder do
 
  # def get_sum(number)

  def find(number) do
    _find(number, [])
  end

  defp _find(number, guesses) where number in guesses do
    {:unhappy}

sammylupt

defmodule HappyNumberFinder do

  # def get_sum(number)
 
  def find(number) do
    _find(number, [])
  end

  defp _find(number, guesses) do
    sum = get_sum(number)

sammylupt

defmodule HappyNumberFinder do
  
  # def get_sum(number)

  def find(number) do
    sum = get_sum(number)
   
    case sum do
      1 -> {:happy}
      _ -> find(sum)