laurenachoo

class Animal
  def initialize(name, food)
    @name = name
    @legs = 4
    @food = food
  end  

  def breathe
    puts "This animal breathes."
  end

laurenachoo

require 'open-uri'

url = "http://ruby.bastardsbook.com/files/fundamentals/hamlet.txt"
local_fname = "hamlet.txt"
File.open(local_fname, "w") {|file| file.write(open(url).read)}

File.open(local_fname, "r") do |file|
  file.readlines.each_with_index do |line, idx|
    puts line if idx % 42 == 41
  end

laurenachoo

class BottleConsumer
  attr_accessor :bottles, :caps, :dollars, :empty, :bottles_returned, :caps_returned

  def initialize(dollars) 
    @bottles = 0
    @caps = 0
    @empty = 0
    @dollars = dollars
    @caps_returned = 0
    @bottles_returned = 0

laurenachoo

require 'active_support/all'

@candidates = [
  {
    id: 5,
    years_of_experience: 4,
    github_points: 293,
    languages: ['C', 'Ruby', 'Python', 'Clojure'],
    date_applied: 5.days.ago.to_date,
    age: 26

laurenachoo

# Determine whether a string contains a SIN (Social Insurance Number).
# A SIN is 9 digits and we are assuming that they must have dashes in them
def has_sin?(string)
  !!/\b\d{3}-\d{3}-\d{3}\b/.match(string)
end

puts "has_sin? returns true if it has what looks like a SIN"
puts has_sin?("please don't share this: 234-604-142") == true

puts "has_sin? returns false if it doesn't have a SIN"

laurenachoo

def benchmark 
  start_time = Time.now
  yield
  Time.now - start_time
end

long_string = "apple"*100000000
running_time = benchmark do  
  long_string.reverse 
end 

laurenachoo

@states = {
  OR: 'Oregon',
  FL: 'Florida',
  CA: 'California',
  NY: 'New York',
  MI: 'Michigan'
}
@states.store("WV","Charleston")
@states.store("MN", "Augusta")

laurenachoo

@states = {
  OR: 'Oregon',
  FL: 'Florida',
  CA: 'California',
  NY: 'New York',
  MI: 'Michigan'
}
@states.store("WV","Charleston")
@states.store("MN", "Augusta")

laurenachoo

def count_letters(strings)
  count = Hash.new(0)
  strings.split('').each_with_index do |string, index|
    count[string] = index
  end

  count
end

puts count_letters("lighthouse in the house...")

laurenachoo

def count_letters(strings)
  count = Hash.new(0)
  strings.split('').each do |string|
    count[string] += 1
  end

  count
end

puts count_letters("lighthouse in the house...")