Ruby, Safe Reads, Writes

class Module
  def hybrid_accessor(*symbols)
    symbols.each do |symbol|
      variable = :"@#{symbol}"  # :variable => :@variable
      define_method(symbol) do |*arguments|
        return instance_variable_get variable if arguments.empty?
        raise ArgumentError, "Expected 0..1 arguments, got #{arguments.count}" if arguments.count > 1
        instance_variable_set variable, arguments.first
      end
    end
  end

  def safe_reader(*symbols)
    symbols.each do |symbol|
      variable = :"@#{symbol}"  # :variable => :@variable

      #Borrow a bit from conventions I've seen and say anything appended by
      # an underscore is a "READONLY" field
      define_method("#{symbol}_") do
        return instance_variable_get variable
      end
    end
  end

    # Confusing+unoriginal syntax is confusing+unoriginal
    # Taking suggestions to improve this function
  def safe_writer(*symbols)
    symbols.each do |symbol|
      variable = :"@#{symbol}"  # :variable => :@variable
      define_method("#{symbol}!") { |arg|
        instance_variable_set(variable, arg)
      }
    end
  end
end

class X
  safe_reader :test_var
  safe_writer :test_var
  #hybrid_accessor :test_var

  def initialize(value = :default)
    puts "RESULT OF ASSIGNMENT: #{test_var! (value)}"
    puts self.methods

    read_result = test_var_()
    puts "VALUE OF test_var: #{read_result}\n\t Compare with: #{@test_var}"
    if(read_result != value)
      puts "uhoh"
    end
  end
end

x = X.new("Test")