Merge branch 'master' of github.com:mokhan/bootcamp

2 files changed, 167 insertions, 0 deletions

diff --git a/readme.md b/readme.md
index 005fd28..682eed3 100644
--- a/readme.md
+++ b/readme.md
@@ -6,6 +6,14 @@
   * receiver vs message
   * instance variables
 
+# lesson two
+
+* default parameters
+* named parameters
+* symbols
+* hashes
+* object references
+
 # todo
 
 * encapsulation
diff --git a/spec/review01_spec.rb b/spec/review01_spec.rb
new file mode 100644
index 0000000..d8d5fde
--- /dev/null
+++ b/spec/review01_spec.rb
@@ -0,0 +1,159 @@
+
+require 'spec_helper'
+
+describe "review lesseon 1" do
+  context "strings" do
+    it "review" do
+      puts 'blah #{DateTime.now}'
+      puts "blah #{DateTime.now}"
+      puts String.new("hello")
+      # puts String.public_methods
+    end
+  end
+  
+  class Person
+    # attr_reader :first_name
+    # attr_writer :first_name
+    attr_accessor :first_name
+    
+    def initialize(first_name = "no name")
+      @first_naem = first_name
+    end
+    
+    # def first_name
+    #   @first_name
+    # end
+    
+    # def first_name=(new_name)
+    #   @first_name = new_name
+    # end
+        
+    def change_address(street_address, city = "Calgary")
+      @street_address = street_address
+      @city = city
+    end
+    
+    def change_clothes(pants: "jeans", shirt: "t-shirt")
+      puts "PANTS: #{pants}"
+      puts "SHIRT: #{shirt}"    
+    end
+  end
+  
+  class CoffeeShop
+    def initialize(defaults = {size: "regular", type: "espresso", strength: nil, room: false})
+      @defaults = defaults
+    end
+    
+    # def serve_me(size: "regular", type: "espresso", strength: nil, room: false)
+    def serve_me(options = {})
+      order = @defaults.merge(options)
+      coffee = "Here's your"
+      [:strength, :size, :type].each do |key|
+        coffee += (order[key] ? " #{order[key]}" : "")
+      end
+      coffee += (order[:room] ? " with room" : "")
+      coffee += "."
+      coffee
+    end
+  end
+
+  class Movies
+    def initialize()
+      @movies = ["jurassic park", "rocky", "rocky II"]
+    end
+    
+    def accept(visitor)
+      size = @movies.size
+      until i > size
+        movie = @movies[i]
+        visitor.visit(movie)
+        i=i+1
+      end
+    end
+  end
+  
+  class LoggingVisitor
+    def visit(item)
+      puts item
+    end
+  end
+  
+  class TotalCount
+    attr_reader :total
+    
+    def initialize
+      @total = 0
+    end
+    
+    def visit(item)
+      @total = @total + 1
+    end
+  end
+  
+  context "visitor" do
+    it "can visit each movie" do
+      movies = Movies.new
+      visitor = LoggingVisitor.new
+      total_movies = TotalCount.new
+      
+      movies.accept(visitor)
+      movies.accept(total_movies)
+      
+      puts total_movies
+      
+      [1, 3, 4].each do |x|
+        puts x * x
+      end
+      
+      [1, 2, 4].map do |x|
+        return x *x
+      end
+      
+    end
+  end
+  
+
+  context "objects" do
+    it "review" do
+      person = Person.new("mo")
+      # person.full_name # instance method
+      person.first_name = 'mo'
+  
+      # person.first_name=('mo')
+      # other_person = Person.create # class method (singleton method)
+      puts person.object_id
+
+    end
+    
+    it "can use a default parameter" do
+      mo = Person.new("mo")
+      mo.change_address("1737 23 ave nw")
+    end
+    
+    it "can use named parameters" do
+      mo = Person.new("mo")
+      mo.change_clothes(shirt: "bunny hug", pants: "none")
+    end
+  end
+  
+  context "CoffeeShop" do
+    def shop
+      CoffeeShop.new
+    end
+    
+    it "can serve a coffee the way I like it" do
+      coffee = shop.serve_me(size: "medium", type: "dark roast")
+      coffee.should == "Here's your medium dark roast."
+    end
+    
+    it "should serve a coffee with the correct strength" do
+      coffee = shop.serve_me(size: "large", type: "light roast", strength: 'single')
+      coffee.should == "Here's your single large light roast."
+    end
+    
+    it "should specify the room" do
+      coffee = shop.serve_me(size: "small", room: true)
+      coffee.should == "Here's your small espresso with room."
+    end
+  end
+end
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