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codecaine · 05-15-2010, 11:26 PM

This is a example of classes in Ruby with operator overloading.

Code:

=begin

This program is a Gradebook class example

coded by codecaine aka Jerome Scott II

=end

class GradeBook

  #default contrustor for GradeBook

  def initialize(instructor, course)

    @instructor_name = instructor #initialize instructor name

    @course_name = course #initialize course name

  end

  #set instructor name

  def instructor_name=(instructor)

    #check if the string is empty

      if not instructor.strip.empty?

        @instructor_name = instructor

    else

      puts 'Error: Tried to provide an empty string for instructor_name'

    end

  end

  #get instructor name

  def instructor

    @instructor_name

  end

  #set course name

  def course_name=(course)

    #check if the string is empty

      if not course.strip.empty?

        @course_name = course

    else

      puts 'Error: Tried to provide an empty string for course_name'

    end

  end

  #get course name

  def course_name

    @course_name

  end

  #display course instructor

  def display_message

    puts "This course is presented by: #{@instructor_name}"

  end

end

gb = GradeBook.new('codecaine','CIS 101') #initialize a gradebook

gb.course_name = '  ' #try to set a empty string for course name

puts gb.course_name #print course name

gb.display_message #print the cou

***drdebcol*** · 05-16-2010, 01:00 AM

This is very good codecaine.
Back_track also made something about classes in Ruby here :
http://www.pro9ramming.com/-ruby-classes...-1261.html