Assignment

week1/homework/questions.txt

@@ -3,13 +3,28 @@ Chapter 3 Classes, Objects, and Variables
 p.86-90 Strings (Strings section in Chapter 6 Standard Types)
 
 1. What is an object?
+Every object in Ruby is an instance of a particular class, which is itself an object.
 
 2. What is a variable?
+A variable refers to an object.
 
 3. What is the difference between an object and a class?
+As explained by David Black in his book "The Well-Grounded Rubyist", classes define clusters of 
+behavior or functionality and each object is an instance of a class. Objects can acquire 
+methods and behaviors not defined in their class.
 
 4. What is a String?
+A string is a sequence of characters. Typically, a string holds printable characters.
+It can also hold binary data.
 
 5. What are three messages that I can send to a string object? Hint: think methods
+length - returns the number of characters in a string
+capitalize - returns a copy of the string in which the first character appears in uppercase and the rest in lowercase
+reverse - returns a new string in which the characters appear in reverse order
 
 6. What are two ways of defining a String literal? Bonus: What is the difference between them?
+Double quotes and single quotes. The difference is you cannot do string interpolation in 
+single-quoted strings. Also, more escape sequences are supported by double-quoted strings.
+
+*Resources used for this assignment: "Programming Ruby 1.9 & 2.0", "The Well-Grounded Rubyist"
+

week1/homework/strings_and_rspec_spec.rb

@@ -12,14 +12,15 @@
 		before(:all) do
 			@my_string = "Renée is a fun teacher. Ruby is a really cool programming language"
 		end
-		it "should be able to count the charaters"
+		it "should be able to count the charaters" do
+			@my_string.should have(66).characters
+		end
 		it "should be able to split on the . charater" do
-			pending
-			result = #do something with @my_string here
+			result = @my_string.split(".")
 			result.should have(2).items	
 		end
 		it "should be able to give the encoding of the string" do
-			pending 'helpful hint: should eq (Encoding.find("UTF-8"))'
+			@my_string.encoding.name.should eq "UTF-8"
 		end
 	end
 end

week2/homework/questions.txt

@@ -3,11 +3,25 @@ Containers, Blocks, and Iterators
 Sharing Functionality: Inheritance, Modules, and Mixins
 
 1. What is the difference between a Hash and an Array?
+An array is indexed with integers only, while a hash can be indexed
+with objects of any type.
 
 2. When would you use an Array over a Hash and vice versa?
+A typical use of the hash, according to the book The Well-Grounded Rubyist,
+is storing strings along with their abbreviations. For example, state names and their
+abbreviations.
 
 3. What is a module? Enumerable is a built in Ruby module, what is it?
+Modules are a way of bundling methods, classes and constants together.
+Enumerable is a standard mixin. When Enumerable is mixed into a class, the class
+has to define an each instance method. Objects of that class are then able to
+to call any instance method defined in the Enumerable module.
 
 4. Can you inherit more than one thing in Ruby? How could you get around this problem?
+With Ruby being a single-inheritance language, a Ruby class has just one direct parent.
+However, classes can include the functionality of any number of mixins.
 
 5. What is the difference between a Module and a Class?
+Classes have instances while modules do not.
+
+Info source: "Programming Ruby" and "The Well-Grounded Rubyist"

week2/homework/simon_says.rb

@@ -0,0 +1,27 @@
+module SimonSays
+	def echo(string)
+		 return string
+	end
+
+
+	def shout(string)
+		return string.upcase
+	end
+
+	def repeat(string, num = 2)
+		a = (string + " ") * num
+		return a.rstrip
+	end
+
+	def start_of_word(string, num)
+		string.split(//)
+		return string[0..(num - 1)]
+	end
+
+	def first_word(string)
+		b = string.split
+		return b[0]
+	end
+
+end
+

week3/homework/calculator.rb

@@ -0,0 +1,23 @@
+class Calculator
+
+	def sum x=[]
+		x.inject(0) {|sum, num| sum + num}
+	end
+
+	def multiply b
+		b.inject(:*)
+	end
+
+
+	def pow num1, num2
+		num1 ** num2
+	end
+
+	def fac num
+		if num == 0
+			return 1
+		else
+			(1..num).inject(1) {|product, num| product * num}
+		end
+	end
+end

week3/homework/questions.txt

@@ -5,11 +5,19 @@ Please Read:
  - Chapter 22 The Ruby Language: basic types (symbols), variables and constants
 
 1. What is a symbol?
+A symbol is an identifier that corresponds to a string of characters.
 
 2. What is the difference between a symbol and a string?
+The difference between the two is a symbol is immutable.
 
 3. What is a block and how do I call a block?
+A block is a batch of code placed between either braces or the keywords
+"do" and "end."
 
 4. How do I pass a block to a method? What is the method signature?
+Using the yield statement, a block may be invoked within a method.
 
 5. Where would you use regular expressions?
+Regular expressions are used for pattern matching and substitution.
+
+Info source: "Programming Ruby"

week4/homework/questions.txt

@@ -3,12 +3,25 @@ Chapter 10 Basic Input and Output
 The Rake Gem: http://rake.rubyforge.org/
 
 1. How does Ruby read files?
+Gets reads from files specified on the command line.
+File.gets reads a line from the file object file.
+
 
 2. How would you output "Hello World!" to a file called my_output.txt?
+File.open("my_output.txt", "w") do |file|
+	file.puts "Hello World!"
+end
+
 
 3. What is the Directory class and what is it used for?
+Objects of class Dir are directory streams representing directories in the underlying file system.
+They provide ways to list directories and their contents.
 
 4. What is an IO object?
+An IO object is a bidirectional channel between a Ruby program and an external resource.
 
 5. What is rake and what is it used for? What is a rake task?
+Rake is a Ruby gem with capabilities similar to make. Users can specify tasks with prerequisites.
+A rake task is the basic unit of work in a Rakefile. 
 
+*Info source: "Programming Ruby", http://rake.rubyforge.org/

week4/homework/worker.rb

@@ -0,0 +1,10 @@
+#I tried but failed to come up with something for the last test.
+
+class Worker
+	def self.work *n
+		yield n
+	end	
+
+
+end
+

week7/homework/features/step_definitions/pirate.rb

@@ -0,0 +1,14 @@
+class PirateTranslator
+	def say (word)
+		@word = word
+	end
+
+	def translate
+		self.send("split")
+	end
+
+	def split
+
+	end
+
+end

week7/homework/features/step_definitions/tic-tac-toe-steps.rb

@@ -33,9 +33,10 @@
   @game.player.should eq "Renee"
 end
 
+
 Then /^the computer prints "(.*?)"$/ do |arg1|
   @game.should_receive(:puts).with(arg1)
-  @game.indicate_palyer_turn
+  @game.indicate_player_turn
 end
 
 Then /^waits for my input of "(.*?)"$/ do |arg1|

week7/homework/features/step_definitions/tic-tac-toe.rb

@@ -0,0 +1,107 @@
+
+
+class TicTacToe
+
+	SYMBOLS = [:X, :O]
+
+	@board = {
+      :A1 => " ", :A2 => " ", :A3 => " ",
+      :B1 => " ", :B2 => " ", :B3 => " ",
+      :C1 => " ", :C2 => " ", :C3 => " "
+    }
+
+	attr_accessor :player
+	attr_reader :player_symbol, :computer_symbol
+
+	def initialize(*args)
+		@current_player = rand([@player, "Computer"].length)
+		if @current_player == 0
+			@current_player = @player
+		else
+			@current_player = "Computer"
+		end
+		@player_symbol = SYMBOLS[rand(SYMBOLS.length)]
+		if @player_symbol == :X
+			@computer_symbol = :O
+		else
+			@computer_symbol = :X
+
+		end
+	end	
+
+
+
+	def player= name
+		@player = name
+	end
+
+	def welcome_player
+		"Welcome #{@player}"
+	end
+
+	def current_player
+		if @current_player = @player
+			return @player
+		else
+			return "Computer"
+		end
+	end
+
+	def player_symbol
+		@player_symbol
+	end
+
+	def computer_symbol
+		@computer_symbol 
+	end
+
+	def indicate_player_turn 
+		puts "#{@player}'s Move:"
+	end
+
+
+
+	def get_player_move
+		move = gets.chomp
+
+	end	
+
+
+	def open_spots
+		a = @board.select{|key, value| value == ""}
+		@open_spots = a.keys
+
+	end
+
+	def player_move
+	end
+
+	def computer_move
+		@com_move = @open_spots[rand(@open_spots.length)]
+		@com_move = @com_move.to_sym
+		@current_player = @player
+	end
+
+	def determine_winner
+	end
+
+
+
+end
+
+
+
+
+
+#Given /^it is the computer's turn$/ do
+#  @game = TicTacToe.new(:computer, :O)
+#  @game.current_player.should eq "Computer"
+#end
+
+#Then /^the computer randomly chooses an open position for its move$/ do
+#  open_spots = @game.open_spots
+#  @com_move = @game.computer_move
+#  open_spots.should include(@com_move)
+#end
+
+

week7/homework/play_game.rb

@@ -10,7 +10,7 @@
 	when "Computer"
 		@game.computer_move
 	when @game.player
-		@game.indicate_palyer_turn
+		@game.indicate_player_turn
 		@game.player_move
 	end
 	puts @game.current_state

week7/homework/questions.txt

@@ -3,7 +3,25 @@ Please Read Chapters 23 and 24 DuckTyping and MetaProgramming
 
 Questions:
 1. What is method_missing and how can it be used?
-2. What is and Eigenclass and what is it used for? Where Do Singleton methods live?
+The method_missing method is executed whenever an object receives a message that's not in the object's method-lookup path. One can override this method either on a singleton basis or in the object's class or
+one of the class' ancestors.
+
+2. What is and Eigenclass and what is it used for? Where Do Singleton methods live
+Eigenclass is another term for an anonymous class or singleton class. Singleton methods live in the object's
+singleton class.
+
 3. When would you use DuckTypeing? How would you use it to improve your code?
+
+
 4. What is the difference between a class method and an instance method? What is the difference between instance_eval and class_eval?
+A class method is a singleton method defined on a class object. You send a message to the class, instead of instances of the class. 
+An instance method can be used by all instances of the class.
+
+Class_eval sets things up as though you were in the body of a class definition, so method definitions will define instance methods.
+Calling instance_eval on a class acts as though you were in the singleton class of self, so methods you define become class methods.
+
 5. What is the difference between a singleton class and a singleton method?
+A singleton method is a method specific to a particular object. An object's singleton method resides in the object's singleton
+class.
+
+*Info source: "Programming Ruby", "The Well-Grounded Rubyist"