larisasmiles · April 10, 2017 16:29
diff --git a/Module 1 Week 4 Diagnostic b/Module 1 Week 4 Diagnostic
 # Module 1 Week 4 Diagnostic

 This exercise is intended to help you assess your progress with the concepts and techniques we've covered during the week.

 For these questions, write a short description or snippet of code that meets the requirement. In cases where the question mentions a "given" data value, use the variable given to refer to it (instead of re-writing the information).

 ##### 1. Give one difference between Modules and Classes.

 Modules are not meant to create intances. 


 ##### 2.  Defining Modules

 First, create a module `Doughy` which defines a method `has_carbs?` that always returns true. 
 Then, given the following Pizza class, update Pizza to use your new Doughy module to gain the defined `has_carbs?` behavior.

 ```ruby
 module Doughy

 class Pizza
  def tasty?
    true
  end
  
  def has_carbs?
    true
  end
    
 end
 ```

 ##### 3. What are two benefits modules provide us in Ruby? Elaborate on each.

 Modules provide a namespace and prevent name clashes.
 Modules implement the mixin facility.

 ##### 4. What values in Ruby evaluate as "falsy"?
 nil and false


 ##### 5. Give 3 examples of "truthy" values in Ruby.
 "0"
 5 == 5
 true == true



 ##### 6.  Git and Branches: give a git command to accomplish each of the following:

 *   Switch to an existing branch iteration-1        :git check out iteration-1
 *   Create a new branch iteration-2                 :git checkout -b iteration-1
 *   Push a branch iteration-2 to a remote origin    :git push origin iteration-2
 *   Merge a branch iteration-1 into a branch master (assume you are not on master to begin with)
                                                    :git checkout master 


 ##### 7.  Load Paths and Requires

 Given a project with the following directory structure, give 2 ways that we could require file_one from file_two.

 ```ruby
  
 . require_relative 'file_1'
 ├── lib
 │  │── file_one.rb
 │  └── file_two.rb
 ```


 ##### 8.  Refactoring: given the following snippet of code, show 2 refactorings you might make to improve the design of this code.

 ```ruby
 class Encryptor
  def date_offset
    date = Time.now.strftime("%d%m%y").to_i
    date_squared = date ** 2
    last_four_digits = date_squared.to_s[-4..-1]
    [last_four_digits[-4].to_i,
    last_four_digits[-3].to_i,
    last_four_digits[-2].to_i,
    last_four_digits[-1].to_i]
  end
 end

 Encryptor.new.date_offset
 ```
 or..... 

 class Encryptor
  def date_offset
    last_four_digits
   end
    
   def last_four_digits
      date - date.last[-4..-1].chars
      made.map! { |num|
      num to_i
      }
  end

  def date
    date = Time.now.strftime("%d%m%y").to_i
  end

 def date_squared
  date_squared = date ** 2
 end
	# Module 1 Week 4 Diagnostic

	This exercise is intended to help you assess your progress with the concepts and techniques we've covered during the week.

	For these questions, write a short description or snippet of code that meets the requirement. In cases where the question mentions a "given" data value, use the variable given to refer to it (instead of re-writing the information).

	##### 1. Give one difference between Modules and Classes.

	Modules are not meant to create intances.


	##### 2. Defining Modules

	First, create a module `Doughy` which defines a method `has_carbs?` that always returns true.
	Then, given the following Pizza class, update Pizza to use your new Doughy module to gain the defined `has_carbs?` behavior.

	```ruby
	module Doughy

	class Pizza
	def tasty?
	true
	end

	def has_carbs?
	true
	end

	end
	```

	##### 3. What are two benefits modules provide us in Ruby? Elaborate on each.

	Modules provide a namespace and prevent name clashes.
	Modules implement the mixin facility.

	##### 4. What values in Ruby evaluate as "falsy"?
	nil and false


	##### 5. Give 3 examples of "truthy" values in Ruby.
	"0"
	5 == 5
	true == true



	##### 6. Git and Branches: give a git command to accomplish each of the following:

	* Switch to an existing branch iteration-1 :git check out iteration-1
	* Create a new branch iteration-2 :git checkout -b iteration-1
	* Push a branch iteration-2 to a remote origin :git push origin iteration-2
	* Merge a branch iteration-1 into a branch master (assume you are not on master to begin with)
	:git checkout master


	##### 7. Load Paths and Requires

	Given a project with the following directory structure, give 2 ways that we could require file_one from file_two.

	```ruby

	. require_relative 'file_1'
	├── lib
	│ │── file_one.rb
	│ └── file_two.rb
	```


	##### 8. Refactoring: given the following snippet of code, show 2 refactorings you might make to improve the design of this code.

	```ruby
	class Encryptor
	def date_offset
	date = Time.now.strftime("%d%m%y").to_i
	date_squared = date ** 2
	last_four_digits = date_squared.to_s[-4..-1]
	[last_four_digits[-4].to_i,
	last_four_digits[-3].to_i,
	last_four_digits[-2].to_i,
	last_four_digits[-1].to_i]
	end
	end

	Encryptor.new.date_offset
	```
	or.....

	class Encryptor
	def date_offset
	last_four_digits
	end

	def last_four_digits
	date - date.last[-4..-1].chars
	made.map! { \|num\|
	num to_i
	}
	end

	def date
	date = Time.now.strftime("%d%m%y").to_i
	end

	def date_squared
	date_squared = date ** 2
	end