2-ruby-oop[code].rb

# code_1

class Point
end

# puts Point.new


# code_1.1

# class Point

  # def initialize
  #   p "I am a Point!"
  # end

# end


# p Fixnum.superclass.superclass.superclass.superclass
# p Point.superclass.superclass

# Point.new


# code_2

# class Tetragon
# end

# class Parallelogram < Tetragon
# end

# class Rectangle < Parallelogram
# end

# class Square < Rectangle
# end


# code_3

# class Point

#   def initialize
#     p "I am a Point!"
#     @x = 3
#     @y = 7
#   end

# end

# Point.new


# code_3.1

# class Point

#   def initialize
#     # p "I am a Point!"
#     @x = -100
#     @y = 99
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

# end

# p Point.new.to_s


# code_3.2

# def cube
#   p "Hello from method cube"
#   3 * 3 * 3
# end

# p cube


# code_3.3

# def cube val
#   # val * val * val
#   val ** 3
# end

# p cube 5.2


# code_3.4

# class Point

#   def initialize
#     # p "I am a Point!"
#     @x = 3
#     @y = 7
#   end

#   # def to_s
#   #   "Point: (#{@x}; #{@y})"
#   # end

# end

# p "#{Point.new}"


# code_4

# class Point

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

# end

# p Point.new(1,5).to_s
# p Point.new(10,5).to_s


# code_4.1

# class Point

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

#   def x
#     @x
#   end

#   def y
#     @y
#   end

# end

# point = Point.new(10,50)
# p point.x
# p point.y


# code_4.2

# class Point

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

#   def x
#     @x
#   end

#   def y
#     @y
#   end

#   def x= val
#     @x = val
#   end

#   def y= val
#     @y = val
#   end

# end

# point = Point.new(1,5)
# point.x = 10
# p point.x


# code_4.3

# class Point

#   attr_accessor :x, :y
#   # attr_reader :x, :y
#   # attr_writer :x, :y

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

# end

# point = Point.new(1,5)
# point.x= 10
# p point.x


# code_4.4

# class Point

#   attr_accessor :x, :y

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

# end

# point_1 = Point.new(1,5)
# point_2 = point_1
# point_2.x = 10

# p point_1.x
# p point_2.x


# code_4.5

# ary = [1,2,3]

# def add ary, val
#   ary.push val
# end

# add(ary, 7)
# p ary


# code_5

# class Point
#   puts self

#   attr_accessor :x, :y

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     coordinates = "(#{@x}; #{@y})"
#     "Point: #{coordinates}"
#   end

# end

# Point.new(1,2).to_s


# code_5.1

# class Point

#   attr_accessor :x, :y

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

#   def + other_point
#     # p self
#     x = @x + other_point.x
#     y = @y + other_point.y
#     Point.new(x, y)
#   end

# end

# puts Point.new(1,2) + Point.new(-1,3)
# puts Point.new(100,45) + Point.new(50,5)
# puts Point.new(0,0) + Point.new(0,0)


# code_5.2

# class Point

#   attr_accessor :x, :y

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

#   def + other_point
#     puts x, y
#     x = @x + other_point.x
#     y = @y + other_point.y
#     Point.new(x, y)
#   end

# end

# Point.new(3,-1) + Point.new(3,5)


# code_5.3

# class Point

#   attr_accessor :x, :y

#   def initialize x, y
#     @x = x
#     @y = y
#   end

#   def to_s
#     "Point: (#{@x}; #{@y})"
#   end

#   def + other_point
#     x = self.x + other_point.x
#     y = self.y + other_point.y
#     Point.new(x, y)
#   end

# end

# point = Point.new 5, 10
# puts point + Point.new(1, -1)
# puts Point.new(0,0) + Point.new(3,5)


# code_5.4

# class Point < Object

#   attr_accessor :x, :y

  # def to_s
  #   super + " Point: (#{@x}; #{@y})"
  # end

#   def inspect
#     "@x=#{@x}; @y=#{@y}"
#   end

#   def assign_coordinates x, y
#     @x = x
#     @y = y
#     self
#   end

#   def + other_point
#     x = self.x + other_point.x
#     y = self.y + other_point.y
#     Point.new(x, y)
#   end

# end

# point = Point.new.assign_coordinates 5, 2
# puts point
# p point


# code_6

# def dices
#   bet = gets.to_i
#   sum = rand(1..6) + rand(1..6)
#   p sum
#   if sum == bet
#     puts "You win!"
#   else
#     puts "You lose."
#   end
# end