chastep

const sleep = ms => new Promise(res => setTimeout(res, ms));

chastep

# https://www.hackerrank.com/challenges/missing-numbers/problem

def missingNumbers(arr, brr)
    og_hash = brr.inject(Hash.new(0)) { |h,v| h[v] += 1; h }
    missing_hash = arr.inject(Hash.new(0)) { |h,v| h[v] += 1; h }
    og_hash.select { |k, v| missing_hash[k] < v || (v == 1 && !missing_hash[k]) }.keys.sort
end

chastep

def gather_all_stripe_charges
  all_charges = []
  has_more = true
  last_charge_id = nil
  
  while has_more
    charges = Stripe::Charge.list({ limit: 100, starting_after: last_charge_id})
    all_charges += initial_charges['data'].map { |charge| {id: charge['id'], amount: charge['amount']} }
    has_more = false unless charges['has_more']
    last_charge_id = all_charges.last.id

chastep

Keybase proof

I hereby claim:

• I am chastep on github.
• I am chastep (https://keybase.io/chastep) on keybase.
• I have a public key ASBtzwze7sysup3j2kbMtugEMYKNMfGc1ky2UiiehnjNHAo

To claim this, I am signing this object:

chastep

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

chastep

get '/sessions/new' do
  if session[:user_id]
    redirect "/"
  else
    erb :'/sessions/new'
  end
end

post '/sessions/new' do
  user = User.authenticate(params[:email], params[:password)