From: Gene Angelo <web.gma@...>
Date: 2010-09-10T00:32:52+09:00
Subject: super.inspect returning escaped control chars? Why?

Hello,

I am new to Ruby please help...

Two questions...

1) I do not know why Contact#inspect returns an escaped string (e.g. \n
changed to \\n, etc.). Can someone help?

I have a Classes Contact and Person...

class Contact
#...
def inspect
    result = ""

    # Print our email addresses...
    # result << "\n"
    result << "Email Addresses:"
    email_addresses.each do |e|
      result << "\n\t#{e.type.to_s.capitalize}: " << e.to_s
    end unless email_addresses.nil?

    # Print our phone numbers...
    result << "\n"
    result << "Phone Numbers:"
    phone_numbers.each do |e|
      result << "\n\t#{e.type.to_s.capitalize}: " << e.to_s
    end unless phone_numbers.nil?

    # Print our web sites...
    result << "\n"
    result << "Web Sites:"
    web_sites.each do |e|
      result << "\n\t#{e.type.to_s.capitalize}: " << e.to_s
    end unless web_sites.nil?

    # This prints an unescaped string, if uncommented...
    #puts result

                # But result returns an escaped string! Why?
    result
  end
#...
end

class Person < Contact
#...
def inspect
    result =
      "Name: #{@last}, #{@first}" \
        << "\nPrefix: #{@prefix}" \
        << "\nMiddle: #{@middle_initial}" \
        << "\nSuffix: #{@suffix}"

    result << "\n"

    # Everything above this returns an unescaped string...

                # super.inspect returns an escaped string! Why?
    result << super.inspect
  end
#...
end

2) Is there any built-in method/class method to unescape an escaped
string (e.g. convert "\\n", "\\t", etc. to "\n", "\t", etc.?


Thank you much.
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