week 7 homework

week1/homework/questions.txt

@@ -3,13 +3,20 @@ Chapter 3 Classes, Objects, and Variables
 p.86-90 Strings (Strings section in Chapter 6 Standard Types)
 
 1. What is an object?
+  Everything in ruby is an object, it's a piece of data that can be manipulated or hold properties.
 
 2. What is a variable?
+  A variable is name that is assigned to reference a piece of information to be called on later. 
 
 3. What is the difference between an object and a class?
+  A class is a definition for objects in it, it defines object properties. An object is an instance of a class.
 
 4. What is a String?
+  A sequence of characters.
 
 5. What are three messages that I can send to a string object? Hint: think methods
+  upcase, reverse, capitalize
 
 6. What are two ways of defining a String literal? Bonus: What is the difference between them?
+  Using quotes or %. 
+

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.length.should eq(66)
+		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.to_s.should eq("UTF-8")
 		end
 	end
 end

week2/homework/questions.txt

@@ -3,11 +3,16 @@ Containers, Blocks, and Iterators
 Sharing Functionality: Inheritance, Modules, and Mixins
 
 1. What is the difference between a Hash and an Array?
+  You index arrays with integers, and index a hash with objects.
 
 2. When would you use an Array over a Hash and vice versa?
+  Arrays are good for storing large sets of data with only 1 value, say like a list of names. A hash would be good for storing a set of data that would include more   information about those 50 people, like their address and birthdate. You can then put the hashes into an array.
 
 3. What is a module? Enumerable is a built in Ruby module, what is it?
+  A sort of library for methods and constants. Enumerable is a mixin that provides searching and sorting methods.
 
 4. Can you inherit more than one thing in Ruby? How could you get around this problem?
+  No, ruby is a single inheritance language. You can get around this problem using mixins.
 
 5. What is the difference between a Module and a Class?
+  A class is a collection of objects, a module is a collection of functions. 

week2/homework/simon_says.rb

@@ -0,0 +1,25 @@
+module SimonSays
+
+
+def echo(word)
+	word
+end
+
+def shout(word)
+	word.upcase
+end
+
+def repeat(word, n = 2)
+   ( "#{word} " * n ).strip
+end
+
+def start_of_word(word, n)
+	word[0,n]
+end
+
+def first_word(string)
+	string.split[0]
+end
+
+
+end	

week3/homework/calculator.rb

@@ -0,0 +1,32 @@
+class Calculator
+
+
+def new 
+	initialize
+end
+
+
+def sum(array)
+    array.inject(:+).to_i
+ end
+
+
+def multiply(*array)
+	array.flatten!
+    array.inject(:*)
+
+end
+
+def pow(num,exp)
+	num ** exp
+end
+
+def fac(n)
+	if n == 0
+		return 1
+	end
+	else
+	n.downto(1).inject(:*)
+end
+
+end	

week3/homework/calculator_spec.rb

@@ -1,4 +1,4 @@
-require "#{File.dirname(__FILE__)}/calculator"
+require "./calculator.rb"
 
 describe Calculator do
 

week3/homework/questions.txt

@@ -5,11 +5,16 @@ Please Read:
  - Chapter 22 The Ruby Language: basic types (symbols), variables and constants
 
 1. What is a symbol?
+  A Ruby symbol is an identifier corresponding to a string of characters, often a name. Example: :symbol
 
 2. What is the difference between a symbol and a string?
+  Symbols are not mutable, or changeable. Symbols also remain in memory while program is in operation, each new instance does not require additional memory / object ID.
 
 3. What is a block and how do I call a block?
+  A block is a chunk of goes between braces or "do" and "end." Blocks are called my invoking a method. 
 
 4. How do I pass a block to a method? What is the method signature?
+  Each or yield are examples. "each &block"
 
 5. Where would you use regular expressions?
+  When you are trying to do pattern matching or text processing.

week4/homework/questions.txt

@@ -3,12 +3,19 @@ Chapter 10 Basic Input and Output
 The Rake Gem: http://rake.rubyforge.org/
 
 1. How does Ruby read files?
+What I gleamed from the book is that basically it reads line by line from the object file, using the File.gets 
 
 2. How would you output "Hello World!" to a file called my_output.txt?
+File.open("my_output.txt", "w")
+File.puts "Hello world!"
+File.close
 
 3. What is the Directory class and what is it used for?
+It contains objects that represent directories in a file system, the class is used for modifying, searching for, and listing files/directories. 
 
 4. What is an IO object?
+An IO object is a bidirectional channel between a Ruby program and some external
+resource. Something you read from and write to.
 
 5. What is rake and what is it used for? What is a rake task?
-
+It's a build tool used to create and manage tasks, sort of like automating things? Nothing I've read has been exactly clear as to what a rake task is, but from what I have gathered it's a task that runs according to the rules and parameters you set in the RakeFile? Need this to be explained.

week4/homework/worker.rb

@@ -0,0 +1,14 @@
+class Worker
+
+    def self.work(n=0)
+    	result = nil
+	    if n > 0
+            n.times{ |stuff| result = yield(stuff) }
+        result
+        else
+ 	    result = yield
+    end
+
+end
+
+end

week7/homework/PirateTranslator.rb

@@ -0,0 +1,2 @@
+class PirateTranslator
+end

week7/homework/features/step_definitions/pirate.rb

@@ -0,0 +1,12 @@
+class PirateTranslator
+
+  def say(words)
+  	@words = words
+  end
+
+  def translate
+  	@words.gsub(/\w/, "Ahoy Matey\n Shiber Me Timbers You Scurvey Dogs!!")
+  end
+
+
+end

week7/homework/features/step_definitions/pirate_speak.rb

@@ -0,0 +1,4 @@
+class PirateTranslator
+
+
+end