class defn code is similar to normal code, but there is a little bit difference

opening_class_in_loop.rb

3.times do
  class A
    puts "Class opened"
  end
end


# => Class opened
# => Class opened
# => Class opened

# but there is little bit difference
3.times do |i|
  class A
    puts "Class opened #{i+1}th time"
  end
end

# Error
# `<class:A>': undefined local variable or method `i' for A:Class (NameError)

# This is however possible
3.times do|i|
  puts "#{i+1}th time"
  class A
    puts "Class opened"
  end
end