chhhris

What is a closure?

How do we implement/create/use a closure in Ruby?

What's the difference between a closure in JS vs Ruby?

Why do we use closures so much more in JS as opposed to Ruby?

What is the Ruby analog of an anonymous function in Javascript?

chhhris

require 'fis/test'

class Phone

  def initialize(number)
    @number = number.gsub(/\D/, '')
    if @number.length == 11 && @number[0] == "1"
      @number = @number[1..10]
    end
  end

chhhris

class MyApp
  def call(env)
    [200, {'Content-Type' => 'text/html'}, ['<a style="background-color:red;">URGENT MSG</a> from Tiny Tim: Hello']]
  end
end

chhhris

def check_prime(number)
  if number == 1
    "You'd think you were prime, but you're not."
  elsif number == 2
    "We call 2 the Littlest Prime"
  elsif number == 3 
    "Octavian Prime"
  elsif number == 4
    "Ain't Prime"
  elsif number == 5

chhhris

code = "fx1=ZY&iX3=ZW&hm5=ZU&dg7=ZS&ei9=ZQ&ge11=ZO&tr13=ZM&hh15=ZK&uX17=ZI&si19=ZG&tX21=ZE&Xn23=ZC&hp25=ZA&pX27=YY&dl29=YW&wo31=YU&XX33=YS&XX35=YQ&re37=YO&et39=YM&ia41=YK&wn43=YI&uo45=YG&dX47=YE&so49=YC&ec51=YA&do53=XY&sX55=XW&xr57=XU&so59=XS&aX61=XQ&ph63=XO&ni65=XM&nX67=XK&Xa69=XI&yX71=XG&aX73=XE&ei75=XC&ie0=ZZ&Xa2=ZX&Xy4=ZV&aX6=ZT&Xn8=ZR&in10=ZP&hp12=ZN&Xa14=ZL&os16=ZJ&rx18=ZH&Xs20=ZF&od22=ZD&ce24=ZB&os26=YZ&Xd28=YX&ou30=YV&nw32=YT&ai34=YR&te36=YP&er38=YN&XX40=YL&XX42=YJ&ow44=YH&ld46=YF&Xp48=YD&ph50=YB&nX52=XZ&Xt54=XX&is56=XV&Xu58=XT&hh60=XR&rt62=XP&eg64=XN&ie66=XL&gd68=XJ&mh70=XH&Xi72=XF&xf74=XD"
codev2 = code.split('&')

codev3 = 
codev2.collect do |x|
  #split each string into two more strings
  x.split('=')
end

codev4 = codev3.flatten #turns array x arrays into a single array.

chhhris

$basketball_game = 
{
 
    :team_1 => 
    {
                :team_name => "Knicks",
                :colors => ["blue", "orange"],
                :player_1 =>
                {
                  :name => "Patrick Ewing",

chhhris

library {
  :artist => {
    "The Magnetic Fields" => {
      "69 Love Songs" => ["Song 1", "Song 2"]
      ]
      "Get Lost" => ["Song 1", "Song 2"]
    }
    "Netural Milk Hotel" => {
      "In An Aeroplane Over the Sea" => ["Song 1", "Song 2"]
    }

chhhris

# Temperature bot is comfortable when it's room temperature (18-21C). Help him out by completing the method below:

def temperature_bot(temp)
  case temp
  when 18..21
    "I like this temperature"
  else
    "This is uncomfortable for me"
  end
end

chhhris

# Chain at least 5 method calls to an object. Reduce this operation one chain at a time.

puts "rotator dad rotator".reverse.slice(8,3).capitalize.slice(0,0).concat("Father's Day is this weekend.")

# Don't just use the methods below, make up your own chain and try to see if you can do something fun with Ruby like in the example.

puts "rotator dad rotator".reverse
# #=> rotator dad rotator

puts "rotator dad rotator".reverse.slice(8,3)

chhhris

# Create Hashes for the following use-cases.

# A movie collection that organizes by genres

movies {
  :genre1 => ["movie title 1", "movie title 2", "movie title 3"],
  :genre2 => ["movie title 1", "movie title 2", "movie title 3"],
  :genre3 => ["movie title 1", "movie title 2", "movie title 3"],
  }
}