yowchun93

defmodule DeafAunty do
  def run do
    read_input(0)
  end

  # main loop
  defp read_input(consecutive_byes) when consecutive_byes < 3 do
    IO.read(:stdio, :line)
    |> String.trim
    |> talk_to_aunty(consecutive_byes)

yowchun93

1. Tell us about a newer web technology that you like

The one technology that piqued my interest in TypeScript. As a software engineer that has work mostly on dynamic typed languages such as Ruby and Javascript, learning TypeScript has been a really eye opening experience for me.

My general experience of using TypeScript and this is based on my personal experience , using a typed language does the following things better than a dynamically typed language:

1. Types together with Automated tests, give developers the confidence to refactor code, because of the help you get from the compiler and IDE. This generally means that the code will have less technical debt.
2. Modelling domain objects using Typescript' structural sub-typing. As opposed to the classic typing from c# and java, typescript's type system .

Now code are written coupled to interface, as opposed to class-typing done in Java.

yowchun93

# Creating custom validator 

# https://github.com/igorkasyanchuk/active_storage_validations/blob/master/lib/active_storage_validations/size_validator.rb

# inherited 
class SizeValidator < ActiveModel::EachValidator

def check_validity!
raise ArgumentError,  ‘bla bla’
end	

yowchun93

# CheckoutService takes a cart, and checkouts each cart items
class CheckoutService
  def initialize(cart, params)
    @cart   = cart
    @params = params
  end
  
  def run
      create_order
      if order_approved? && cart.checked_out_at.nil?

yowchun93

it 'does not allow multiple reservations on same spot' do
    wait_for_all_threads = true

    reservation_counter = ReservationCounterQuery.find_or_initialize_by_params(account, {
      schedule_id: schedule.id,
      date: Date.today.to_s
    })

    form1 = Reservation::SpotBooking::CreateForm.new(count: 1, reserved_spots: '1')
    form2 = Reservation::SpotBooking::CreateForm.new(count: 1, reserved_spots: '1')

yowchun93

gem 'shopify_app'

ShopifyApp

def callback
  if auth_hash
    
  end
end

yowchun93

function delay(milliseconds: number, count: number): Promise<number> {
  return new Promise<number>(resolve => {
    setTimeout(() => {
      resolve(count);
    }, milliseconds )
  })
}
  
async function dramaticWelcome(): Promise<void> {
  for (let i = 0; i < 5; i++) {

yowchun93

## Might be unpopular , but i dont think we need this class because Ruby != Java LOL
## We should trust the object to implement create_order 
class CourierAPI::OrderCreationStrategy::Base
  attr_reader :order, :error_message

  def create_order(parcel)
    raise NotImplementedError, "#{self.class} has not implemented method '#{__method__}'"
  end
end

yowchun93

export default function App() {
  return (
    <div className="App">
      <Toggle
        render={(on, toggle) => (
          <div>
            {on && <h1>Hello</h1>}
            <button onClick={() => toggle()}>toggle</button>
          </div>
        )}

yowchun93

// create a function which takes an array of any types, and return a value of that type

// create a function which takes 2 values of any type and return an array of the type

// create a function called 'makeFullName', which takes an object 

// create a function called 'makeFullName', which takes an object with attribute { firstName, lastName }

// making it optional 
interface UserName {