week 2 materials

week2/class_materials/resources.txt

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+
+Ruby Docs: http://www.ruby-doc.org/core-1.9.3/String.html
+Pragmatic Programmers Guide: http://pragprog.com/book/ruby3/programming-ruby-1-9 (at the bottom is the link to the extending Ruby pdf I mentioned)
+
+Travis CI (where open source projects are tested): https://travis-ci.org
+grb: https://github.com/jinzhu/grb
+The Ruby ToolBox: https://www.ruby-toolbox.com/
+
+my alias for rspec:
+alias rspec="rspec --color --format documentation"

week2/exercises/book.rb

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+class Book
+  attr_accessor :title
+  attr_reader :page_count
+
+  @@book_count = 0
+
+  def self.book_count
+    @@book_count
+  end
+
+  def initialize title = "Not Set", page_count = 0
+    @@book_count += 1
+    @page_count = page_count
+    @title = title
+  end
+
+end

week2/exercises/book_spec.rb

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+require_relative 'book'
+require_relative '../../spec_helper'
+
+describe Book do
+
+  context "::book_count" do
+
+    it "should count how many books have been created" do
+      Book.new
+      Book.new
+      Book.new
+      Book.book_count.should eq 3
+    end
+
+  end
+
+  context "::new" do
+
+    it "should set some defaults" do
+      Book.new.title.should eq "Not Set"
+    end
+
+    it "should allow us to set the page count" do
+      book = Book.new "Harry Potter", 5
+      book.page_count.should eq 5
+    end
+
+  end
+
+  context "#title" do
+
+    before :each do
+      @book = Book.new
+    end
+
+    it "should have a title" do
+      @book.should respond_to "title"
+    end
+
+    it "should allow me to set the title" do
+      @book.title = "Snow Crash"
+      @book.title.should eq "Snow Crash"
+    end
+
+
+
+  end
+
+end

week2/exercises/mad_libs.rb

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+puts "Please enter a noun"
+noun = gets.chomp
+puts "Please enter an adjective"
+adjective = gets.chomp
+puts "Please enter a past tense action verb"
+verb_past_tense = gets.chomp
+puts "What does the #{noun} say?"
+says = gets.chomp
+story = "The #{adjective} #{noun} #{verb_past_tense} past the graveyard and says #{says}"
+puts story

week2/homework/questions.txt

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+Please Read The Chapters on: 
+Containers, Blocks, and Iterators 
+Sharing Functionality: Inheritance, Modules, and Mixins
+
+1. What is the difference between a Hash and an Array?
+
+2. When would you use an Array over a Hash and vice versa?
+
+3. What is a module? Enumerable is a built in Ruby module, what is it?
+
+4. Can you inherit more than one thing in Ruby? How could you get around this problem?
+
+5. What is the difference between a Module and a Class?

week2/homework/simon_says_spec.rb

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+# Hint: require needs to be able to find this file to load it
+require_relative "simon_says.rb"
+require_relative '../../spec_helper'
+
+describe SimonSays do
+  include SimonSays # Hint: Inclusion is different than SimonSays.new (read about modules)
+
+  # Hint: We are just calling methods, we are not passing a message to a SimonSays object.
+  it "should echo hello" do
+    echo("hello").should == "hello"
+  end
+
+  it "should echo bye" do
+    echo("bye").should == "bye"
+  end
+
+  it "should shout hello" do
+    shout("hello").should == "HELLO"
+  end
+
+  it "should shout multiple words" do
+    shout("hello world").should == "HELLO WORLD"
+  end
+
+  it "should repeat" do
+    repeat("hello").should == "hello hello"
+  end
+
+  it "should repeat a number of times" do
+    repeat("hello", 3).should == "hello hello hello"
+  end
+
+  it "should return the first letter" do
+    start_of_word("hello", 1).should == "h"
+  end
+
+  it "should return the first two letters" do
+    start_of_word("Bob", 2).should == "Bo"
+  end
+
+  it "should tell us the first word of 'Hello World' is 'Hello'" do
+    first_word("Hello World").should == "Hello"
+  end
+
+  it "should tell us the first word of 'oh dear' is 'oh'" do
+    first_word("oh dear").should == "oh"
+  end
+end