hello-world.cr

puts "Hello, World"

STDOUT.puts "Hello, World"

class Point
  property :x, :y
  
  def initialize(@x, @y)
  end
end

struct Point
  property :x, :y
  
  def initialize(@x, @y)
  end
end


class RPoint
  property :x, :y

  def initialize(@x, @y)
  end
end

struct VPoint
  property :x, :y

  def initialize(@x, @y)
  end
end

def show(point)
  puts "1: #{point.x}x#{point.y}"
  point.x += 10
  puts "2: #{point.x}x#{point.y}"
end

a = RPoint.new(10, 10)
b = VPoint.new(10, 10)

puts "Reference"
show(a)
show(a)

puts "Value"
show(b)
show(b)