Local Variable medium

local_var.rb

local_var = "I am local var defined in root."
puts local_var  # => "I am local var defined in root."

# accessing local var which is defined in root 
def access
   puts local_var   # => NameError
end

# accessing variable in nested method
def parent_method
  local_var = "I am local var defined in a method."
  def child_method
    puts local_var   # => NameError
  end
end