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Ruby Ruby Objects and Classes Variables and Methods Variables and Methods

Eylon Cohen
Eylon Cohen
4,779 Points
Posted by Eylon Cohen
Eylon Cohen
4,779 Points

instance varible

Hii, Didn't understand the methods in the answer:

def initialize (title) @title=title end def title @title end

a. the second line is assigning the global varible to a local variable? what is the importance of @? b. the second methode means: "when calling the method title (Which belongs only to the specific class, I would guess), return the local varible"? should be there a return or something?

Thank you!

class.rb 
class Name
  def initialize (title)
    @title=title
  end
  def title 
    @title
  end

  def first_name
    "Metal"
  end

  def last_name
    "Robot"
  end
end

name=Name.new("Dr.")

1 Answer

Christopher McAnally
Christopher McAnally
2,941 Points
Christopher McAnally
Christopher McAnally
2,941 Points

The @ means the variable is an "instance" variable. So every time you do:

Name.new

You will be creating a new Name object and inside that object will be a title field. So in the second method here:

def initialize (title)
    @title=title
  end
  def title 
    @title
  end

You are returning the value of @title, or that specific name object's title. The initialize method sets @title with a starting value.