From: "JeremyWoertink@..." <JeremyWoertink@...>
Date: 2007-10-12T04:04:04+09:00
Subject: Re: I need some help plz with my ruby project.

well, to start I noticed a few syntax errors, yield is misspelled, and
in the line  s1.each_grade.collect { |course| do course[2] } I don't
know what you were trying to do with 'do course[2]' maybe yield
course[2] and your get_grade method has c[Grade] but I don't know what
Grade is, so maybe it should be
def get_grade(code, Grade)
    (c=@courses[code]) && c[Grade]
  end

maybe that might help a little


~Jeremy

On Oct 11, 11:10 am, wiz_penda...@yahoo.com wrote:
> First, i need to extend the student class, and its to be enumerable by
> courses.  Then, show off the new functionality supported by this
> change by writing an expression that returns a list of all of the
> grades a student has earned in the courses he or she has completed for
> the major.
>
> here is what I got so far...what am i missing
> -----------------------------------------------------------------------------------------------------------------
> irb
>
> # This class initializes a new student with ID,
> # and shows a list of completed courses,
> # and also shows a list of grades from completed courses.
> class Student
>
>   include Enumerable
>
>   attr_reader :name, :id
>
>   # Initializing the students name and ID.
>   # Name = Student's name.
>   # ID = Student's ID.
>   # Initializing courses to equal a new hash.
>   def initialize(name, id)
>     @name = name
>     @id = id
>     @courses = {}
>   end
>
>   # Adding a course to the set of those completed.
>   def add_course(code, name, grade)
>     @courses[code] = [code, name, grade]
>   end
>
>   # Retrieving the grade for a particular course.
>   def get_grade(code)
>     (c=@courses[code]) && c[Grade]
>   end
>
>   # Changing the grade for a course completed.
>   def set_grade(code, grade)
>     @courses[code][Grade] = grade
>   end
>
>   # Providing a list of all of the courses completed.
>   def list_courses
>     @courses.values
>   end
>
>   def each_grade
>     @courses.each { |course| yeild course }
>   end
> end
>
> s1 = Student.new("Eric", "00101")
> s1.add_course("22c:021", "Computer Science I", "B-")
> s1.each_grade.collect { |course| do course[2] }
> puts s1
> ------------------------------------------------------------------------------------------------------------
> if you help meh out soon it would be great...thanks and later......