Week7 homework in flight

.gitignore

@@ -1 +1,2 @@
 .DS_Store
+.rspec

midterm/.gitignore

@@ -0,0 +1,13 @@
+*.gem
+*.rbc
+.bundle
+.config
+coverage
+InstalledFiles
+lib/bundler/man
+pkg
+rdoc
+spec/reports
+test/tmp
+test/version_tmp
+tmp

midterm/even_number.rb

@@ -0,0 +1,21 @@
+class EvenNumber
+	include Comparable
+	attr_reader :value
+
+	def self.new(value)
+		return false if value.odd?
+		super
+	end
+
+	def initialize(value)
+		@value = value
+	end
+
+	def succ
+		EvenNumber.new(@value + 2)
+	end
+
+	def <=> (other)
+		@value <=> other.value
+	end
+end

midterm/even_number_spec.rb

@@ -0,0 +1,31 @@
+ # - Write a passing rspec file called even_number_spec.rb that tests a class
+ # called EvenNumber.
+ #    - The EvenNumber class should:
+ #       - Only allow even numbers
+ #       - Get the next even number
+ #       - Compare even numbers
+ #       - Generate a range of even numbers
+
+require_relative 'even_number.rb'
+
+describe EvenNumber do
+	it "should only allow even numbers" do
+		EvenNumber.new(5).should be_false
+	end
+
+	it "should get the next even number" do
+		EvenNumber.new(2).succ.should == EvenNumber.new(4)
+	end
+
+	it "should compare even numbers" do
+		(EvenNumber.new(2) < EvenNumber.new(4)).should be_true
+	end
+
+	it "should generate a range of even numbers" do
+		(EvenNumber.new(2)..EvenNumber.new(8)).should be_a Range
+	end
+
+	it "should only have EvenNumbers in the range" do
+		(EvenNumber.new(2)..EvenNumber.new(6)).to_a.should eq [EvenNumber.new(2), EvenNumber.new(4), EvenNumber.new(6)]
+	end
+end

midterm/instructions_and_questions.txt

@@ -7,7 +7,7 @@ Instructions for Mid-Term submission and Git Review (10pts):
  - I will email you back with your repository name
  - Add a remote to your git repository: [email protected]:RubyWinter2014/YOURREPOSITORYNAME.git
  - Push your changes to the remote
- - After 6pm Thursday February 20th you will not be able to push to your remote repository (or clone).
+ - After 6pm Tuesday November 19th you will not be able to push to your remote repository (or clone).
 
  Questions (20pts):
  - What are the three uses of the curly brackets {} in Ruby?

midterm/questions.txt

@@ -0,0 +1,56 @@
+Instructions for Mid-Term submission and Git Review (10pts):
+ - Create a git repository for your answers
+ - Add and Commit as you work through the questions and programming problems
+ - Your git log should reflect your work, don't just commit after you have finished working
+ - Use .gitignore to ignore any files that are not relevant to the midterm
+ - E-mail me your ssh public key
+ - I will email you back with your repository name
+ - Add a remote to your git repository: [email protected]:RubyFall2012/YOURREPOSITORYNAME.git
+ - Push your changes to the remote
+ - After 6pm Tuesday November 13th you will not be able to push to your remote repository (or clone).
+
+ Questions (20pts):
+ - What are the three uses of the curly brackets {} in Ruby?
+ 1. String interpolation: "#{1+1}"
+ 2. Hash instantiation: {:key => "value"}
+ 3. Block/lambda notation: {puts "hello"}
+
+ - What is a regular expression and what is a common use for them?
+ A Regular expression is a pattern used to search text. A common use for them is for verifying the format of user input, like email addresses or phone numbers. 
+
+ - What is the difference between how a String, a symbol, a FixNum, and a Float are stored in Ruby?
+A String is stored as a collection of characters (bytes) and the value of a string instance can change. A Symbol is a fixed name in ruby and is stored as an integer, so it takes up much less space than a string. A FixNum is an integer in Ruby and does not change its value. It is stored the same way as a symbol (you can think of symbols as Fixed Strings). Floats can have their value change and are stored like a string: each byte of the float is stored and can change individually (This has changed with Floats in Ruby 2.0.0 - floats with a precision of less than 32 bits are now stored like Fixnum and retain the same object_id for subsequent calls. Also, floats with greater than 32 bits in their decimal are rounded down to the closest fixed float of 32 bits. You should play with this in irb with Ruby 1.9.3 and Ruby 2.0.0 to see the difference.)
+
+ - Are these two statements equivalent? Why or Why Not?
+   1. x, y = "hello", "hello"
+   2. x = y = "hello"
+No, in the first example x and y point to different objects, in the second they point to the same object. In # 2 if y changes x will change and vice versa. In # 1 if y changes x does not change and vice versa.
+
+- What is the difference between a Range and an Array?
+A Range is an object that denotes a sequence between two objects (lower/min and higher/max). It does not store every element of the sequence, only the min and max. An array is an ordered list of many objects. Each object in an array is stored and cannot necessarily be determined by the prior object in the array.
+
+- Why would I use a Hash instead of an Array?
+If I had data which I wanted to reference by meta-data instead of by order I would use a hash. For example, if I had a set of attributes common to a collection of things, I would use a hash so I could look across my data (or search) by the data's attribute dimensions.
+
+- What is your favorite thing about Ruby so far?
+.map
+
+- What is your least favorite thing about Ruby so far?
+nil.object_id => 4
+
+ Programming Problems (10pts each):
+ - Write a passing rspec file called even_number_spec.rb that tests a class called EvenNumber.
+    - The EvenNumber class should:
+       - Only allow even numbers
+       - Get the next even number
+       - Compare even numbers
+       - Generate a range of even numbers
+- Make the rspec tests in wish_list_spec.rb pass by writing a WishList class
+   - The WishList class should:
+      - Mixin Enumerable
+      - Define each so it returns wishes as strings with their index as part of the string
+
+Mid-Term Spec (50pts):
+- Make the tests pass.
+
+

midterm/thanksgiving_dinner.rb

@@ -0,0 +1,79 @@
+class String
+  def titlecase
+    self.gsub(/\b\w/){|f| f.upcase}
+  end
+
+  def humanize
+    self.gsub('_', ' ').titlecase
+  end
+end
+
+module MenuFinder
+  MENUS = {
+    :vegan => {
+      :diet => :vegan,
+      :proteins => ["Tofurkey", "Hummus"],
+      :veggies => [:ginger_carrots , :potatoes, :yams]
+    }
+  }
+  def find_menu(kind)
+    MENUS[kind]
+  end
+  def find_dessert
+    @menu[:desserts] = {:pies => [:pumkin_pie],
+      :other => ["Chocolate Moose"],
+      :molds => [:cranberry, :mango, :cherry]}
+  end
+end
+
+class Dinner
+  include MenuFinder
+  attr_accessor :menu, :guests, :kind
+  def initialize(kind)
+    @kind = kind
+    @menu = find_menu(kind)
+  end
+  def seating_chart_size
+    guests.inject(0){|sum,g| sum + g.size}
+  end
+
+  def proteins
+    @menu[:proteins].map{|w| w.titlecase}.join(' and ')
+  end
+
+  def veggies
+    @menu[:veggies].map{|w| w.to_s.humanize}.join(', ').gsub(/, \w*\z/){|w| w.gsub(',', ', and')}
+  end
+
+  def whats_for_dinner
+    "Tonight we have proteins #{proteins}, and veggies #{veggies}."
+  end
+end
+
+class ThanksgivingDinner < Dinner
+
+  def number_of_desserts
+    @menu[:desserts].flat_map{|k,v| v}.count
+  end
+
+  def pies
+    @menu[:desserts][:pies].map{|s| s.to_s.humanize}.join(',')
+  end
+
+  def other
+    @menu[:desserts][:other].join(',')
+  end
+
+  def number_of_molds
+    @menu[:desserts][:molds].count
+  end
+
+  def molds
+    @menu[:desserts][:molds].map{|s| s.to_s.titlecase}.join(' and ')
+  end
+
+  def whats_for_dessert
+    find_dessert
+	  "Tonight we have #{number_of_desserts} delicious desserts: #{pies}, #{other}, and #{number_of_molds} molds: #{molds}."
+  end
+end

midterm/turkey.rb

@@ -0,0 +1,24 @@
+class Animal
+	attr_accessor :weight
+	def initialize(weight)
+		@weight = weight
+	end
+end
+
+class Turkey < Animal
+	def gobble_speak(monkey_talk)
+	  monkey_talk.gsub(/\b\w*/) do |w|
+	  	if w[0] =~ /[A-Z]/
+	  		"Gobble"
+	  	elsif w[0] =~ /[a-z]/
+	  		"gobble"
+	  	end
+	  end.gsub(/\b\w*'\w*\b/) do |w| 
+	  	if w[0]=='G'
+	  		"Gobb'le" 
+	  	else
+	  		"gobb'le"
+	  	end
+	  end
+  end
+end

midterm/wish_list.rb

@@ -0,0 +1,13 @@
+class WishList
+  include Enumerable
+  attr_writer :wishes
+
+  def each
+    @wishes.each_with_index do |w,i|
+      yield "#{i+1}. #{w}"
+    end
+    # @wishes.to_enum.with_index(1) do |w,i|
+    #   yield "#{i}. #{w}"
+    # end
+  end
+end

test

@@ -0,0 +1,18 @@
+Hello World!
+Another line!
+Hello akjfhadf
+jsdhfjkdshf
+
+
+sdjfhdsf
+
+skdjfdsjhf
+
+dsjfhdsjfhsd
+sdjkfhsdjfh
+
+sdjfh
+
+sdlfjsfls
+sdjfhdskf
+skjdhfhi from irb

week1/exercises/roster.txt

@@ -1,4 +1,17 @@
 #, name, email, github, twitter, hip chat 
+<<<<<<< HEAD
+0, 
+1, 
+2, 
+3, 
+4, 
+5, Dan Williams, [email protected], github, hip chat
+6, 
+7, 
+8, 
+9, 
+10, 
+=======
 0, Renée, [email protected], reneedv, @nirdllc, Renee
 1, Andrew Haydock, [email protected], ahaydock, N/A, Andrew
 2, Armie, [email protected], aml888, lilac888, Armie
@@ -10,6 +23,7 @@
 8, jack,[email protected],jackhowl,,jackhowl 
 9, John Wade, [email protected], THEJRRR, @THEJRRR, John Wade
 10, Kevin LaFave, [email protected], kjlafave, none, @Kevin 
+>>>>>>> 94dfcf66c992a45f574f1894e5808847d0b6f32e
 11, 
 12, 
 13, Matt Spah, [email protected], MattsFace, @MatthewsFace, Matthew Spah
@@ -19,4 +33,9 @@
 17, Rukia,	[email protected], 	rukk86, 	no twitter, 	Rukia
 18, 
 19, 
+<<<<<<< HEAD
+20
+21
+=======
 20, Zack Walkingstick, [email protected], zackwalkingstick, no twitter, @zack
+>>>>>>> 94dfcf66c992a45f574f1894e5808847d0b6f32e

week1/homework/questions.txt

@@ -2,14 +2,23 @@ Please read:
 Chapter 3 Classes, Objects, and Variables 
 p.86-90 Strings (Strings section in Chapter 6 Standard Types)
 
-1. What is an object?
+1. What is an object? 
+An object is an instantiantion or instance of a class. 
 
 2. What is a variable?
+A variable is a pointer or reference to an object. Example: Variable -> dan = "Dan"
 
 3. What is the difference between an object and a class?
+A class is the blueprint for the object. 
 
 4. What is a String?
+A string is one or more characters. Methods can be called on a string object.
 
 5. What are three messages that I can send to a string object? Hint: think methods
+capitolize, length, to_i
 
 6. What are two ways of defining a String literal? Bonus: What is the difference between them?
+	1. "String Literal" used in interpolation with the #{interpolation of some type} 
+	2. 'String literal' can't use interpolation.
+
+7. 

week1/homework/questions.txt.BACKUP.2432.txt

@@ -0,0 +1,46 @@
+Please read: 
+Chapter 3 Classes, Objects, and Variables 
+p.86-90 Strings (Strings section in Chapter 6 Standard Types)
+
+<<<<<<< HEAD
+1. What is an object? 
+An object is an instantiantion or instance of a class. 
+
+2. What is a variable?
+A variable is a pointer or reference to an object. Example: Variable -> dan = "Dan"
+
+3. What is the difference between an object and a class?
+A class is the blueprint for the object. 
+
+4. What is a String?
+A string is one or more characters. Methods can be called on a string object.
+
+5. What are three messages that I can send to a string object? Hint: think methods
+capitolize, length, to_i
+
+6. What are two ways of defining a String literal? Bonus: What is the difference between them?
+	1. "String Literal" used in interpolation with the #{interpolation of some type} 
+	2. 'String literal' can't use interpolation.
+
+7. 
+=======
+1. What is an object?
+An object is a representation in memory of a specific concept or thing that the Ruby interpreter knows about. 
+
+2. What is a variable?
+A variable is a name for a location in memory. It can contain, or point to, any type of object.
+
+3. What is the difference between an object and a class?
+An object is an instance of a class, or a specific thing of that class's type in memory. The class is the specifics that are common to all things of that type. The classification of a concept or a thing is a class. A specific thing or concept of a class's type in memory is an object. For example: All books have titles (Class). This book's title is "Harry Potter and the Goblet of Fire" (Object). 
+
+4. What is a String?
+A string is how Ruby understands text. It is a collection of characters (Bytes), and can be created by making an instance of the String class (String.new) or as a string literal ("",'', %Q[]).
+
+5. What are three messages that I can send to a string object? Hint: think methods
+chomp! - removes newline characters, or the specified characters, from the end of a string
+strip! - removes leading or trailing whitespace from a string
+split  - returns an array of strings made up of the original string separated on whitespace or the specified characters or regexp
+
+6. What are two ways of defining a String literal? Bonus: What is the difference between the two?
+Single quotes ex: '' and Double quotes ex: "". The single quotes allow for 2 escape characters: \' and \\ . The double quoted string literal allows for many different escaped special characters (like \n is a line break) and allows for string interpolation, or the injection of evaluated Ruby code into the string ex: "Hello #{my_name}". The single quoted string takes up much less memory than a double quoted string with interpolation. Without interpolation, both are about the same.
+>>>>>>> 9438bd77063c16f253d2a0b3692ccf1a278f3a40