keithtom

# Copyright (C) [2014] by Keith Tom <keith dot tom at gmail>
# Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE

module Rack
  # disable CSS3 and jQuery animations in test mode for speed, consistency and avoiding timing issues.
  # Usage for Rails:
  # in config/environments/test.rb
  # config.middleware.use Rack::NoAnimations
  class NoAnimations

keithtom

Keybase proof

I hereby claim:

• I am keithtom on github.
• I am keithtom (https://keybase.io/keithtom) on keybase.
• I have a public key ASCvDQu_mbvktf1WOr11_QRDnSgOqxv1bbEPAhysEHLpVAo

To claim this, I am signing this object:

keithtom

# A user submits their loan application
class SubmitApplication
  def initialize(applicant, loan)
    ...
  end

  def execute
    update_loan_workflow
    charge_applicant_credit_card
    check_applicant_fico_score

keithtom

# A user submits their loan application
class SubmitApplication
  # store any state that you'll need to do your action
  def initialize(applicant, loan)
    @applicant = applicant
    @loan = loan
  end
end

keithtom

def valid_triangle?(a, b, c)
 
  if ((a == 0 or b == 0 or c == 0) or (a == nil or b == nil or c == nil))
    return false
  end
 
  if a + b > c
    puts "case 1"
    return true

keithtom

def leap_year?(year)
  if year % 4 == 0
    puts "I am divisible by 4!"
    true
  elsif year % 100 == 0
    puts "I am divisible by 100!"
    false
  elsif year % 100 == 0 && year % 400 == 0
    puts "I am divisible by 100 and 400!"
    true

keithtom

Exercise: The Restaurant Wait Time

We have been contracted to write a piece of software for a restaurant. They want to easily be able to enter orders that come in, and be told how long the wait time will be for that order. That is, we are going to write a simple program for placing an order at a restaurant and it will print to the screen how long the wait is.

You can order the following items:

• pizza
• spaghetti
• lasagna
• salad

keithtom

Dev Bootcamp Prep Pairing

What is pairing?

Pairing is when two programmers work together on a problem. We do it a lot at DBC.

Since we'll be pairing with you, if you don't know something, like some fact or detail, that's fine. You should really focus on how to think and talk about the challenge (the technical problem), ie. how to explain what you're thinking, follow what we do together and talk about it, and be able to recognize when we've succeeded!

Most of all just try to relax and enjoy working with us through this process.

keithtom

require_relative "rules"

# An object which represents the checkout process or cash register.
# It scans items, which are added to an internal list of items,
# which are then used to return the #total at any given moment.
# This total tries to use the rules which lead to the cheapest price.
class CheckOut < Struct.new(:rules)
  attr_accessor :rules  # list of available pricing rules (passed on initialization)
  attr_accessor :items  # hash of scanned items and quantities
                        # { "A" => 0, "B" => 1 } means we have scanned one "A" and zero "B"s

keithtom

require 'sqlite3'
require_relative 'user_db' # Setup user table

# Open a database
db = SQLite3::Database.new "test.db"

while true
  # Get user input.
  puts "Add user:"
  user_name = gets.strip