SagarShah_assessment.rb

SagarShah_assessment.rb

SagarShah_assessment.rb

# 1. Arrays
array = ["Blake", "Ashley", "Jeff"]
array << "Avi"
puts array
array[1]
array.index("Jeff")

# 2. Hashes
instructor = {:name=>"Ashley", age: 27}
instructor["location"] = "NYC"
puts instructor
instructor[:name]
instructor.key(27)

# 3. Nested Structures
school = { :name => "Happy Funtime School",
      :location => "NYC",
      :instructors => [ {:name=>"Blake",
                          :subject=>"being awesome" },
                          {:name=>"Ashley",
                          :subject=>"being better than blake"},
                          {:name=>"Jeff",
                            :subject=>"karaoke"}],
      :students => [ {:name => "Marissa",
                    :grade => "B"},
                    {:name=>"Billy",
                    :grade => "F"},
                    {:name => "Frank",
                    :grade => "A"},
                    {:name => "Sophie",
                    :grade => "C"}
                    ]
    }
school[:founded_in] = 2013
school[:students] << "Sagar"
school[:students].delete_at(1)
school[:students].each do |student|
  student[:semester] = "Summer"
end
school[:instructors][1][:subject] = "being almost better than Blake"
school[:students][2][:grade] = "F"
school[:students][0][:name]
school[:instructors][2][:subject]
puts school.values

# 4. Methods
# not entirely sure if this is done correctly.
def grade(name, school)
	school[:students].select do |student|
		if student[:name] == name
			student[:grade]
		end
	end
end
# i. not sure what the refactoring part of this question is asking

def update_subject(instructor_name,subject,school)
	school[:instructors].select do |instructor|
		if instructor[:name] == instructor_name
			instructor[:subject] = subject
		end
	end
end
update_subject("Blake", "being terrible", school)

def add_student(name, grade, school)
	school[:students] << {:name => name, :grade => grade}
end
add_student("Sagar", "A", school)

def add_new_key(key, value, school)
	school[key] = value
end
add_new_key("Ranking", 1, school)

# 5. Object Orientation
class School

	SCHOOLS =[]

	attr_accessor :name, :location, :instructors, :students
	attr_reader :ranking
	def initialize(name, location, ranking, students, instructors)
		#assuming that all parameters get passed in as previously
		@name = name
		@location = location
		@ranking = ranking
		@students = students
		@instructors = instructors
		add_school
	end

	def add_school
		SCHOOLS << self
	end

	def self.reset
		SCHOOLS = []
	end

	def ranking=(value)
		@ranking = value
	end

	def add_student(name, grade, semester)
		@students << {:name => name, :grade => grade, :semester => semester}
	end

	def remove_student(name)
		@students.each_with_index do |student, i|
			@students.delete_at(i) if student[:name] == name
		end
	end
end

# 6. Classes
class Student
	attr_accessor :name, :semester, :grade
	STUDENTS =[]


	def self.find_by_name(name_parameter)
		STUDENTS.select do |student|
			student if student.name == name_parameter
		end
	end
end

# Refactoring for student object.
class School

	SCHOOLS =[]

	attr_accessor :name, :location, :instructors, :students
	attr_reader :ranking
	def initialize(name, location, ranking, students, instructors)
		@name = name
		@location = location
		@ranking = ranking
		@students = students
		@instructors = instructors
		add_school
	end

	def add_school
		SCHOOLS << self
	end

	def self.reset
		SCHOOLS = []
	end

	def ranking=(value)
		@ranking = value
	end

#refactored
	def add_student(student)
		@students << student
	end

#refactored
	def remove_student(name_parameter)
		@students.each_with_index do |student, i|
			@students.delete_at(i) if student.name == name_parameter
		end
	end
end


# 7. Self
# a. "hello" "Student"
# b. "Student"
# c. the instance of the student that was created as a result of the self.new method call.
# d. the instance of the student that was created as a result of the Student.new method call.
# e. "goodbye"