The Email Class

Exercise 10.1

In a new file email_1.rb write a class Email that has a subject, date, and from attribute. Make it so that these attributes can be populated through new and initialize.

The following code

class Email
  # fill in this class body
end
email = Email.new("Homework this week", "2014-12-01", "Ferdous")
puts "Date:    #{email.date}"
puts "From:    #{email.from}"
puts "Subject: #{email.subject}"

should then output the following:

Date:    2014-12-01
From:    Ferdous
Subject: Homework this week

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Exercise 10.2

Once you have this class, copy your file to email_2.rb.

Change your class so that the initialize method now takes a subject string, and a headers hash. This is then more in line with how actual emails are stored in the real world: the values date and from are stored on a hash, which is called the “email headers”.

Doing so, in the code above the only line you should change is the one that instantiates the email object, which should now read:

email = Email.new("Keep on coding! :)", { :date => "2014-12-01", :from => "Ferdous" })

Your program should now still produce the same output.

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