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Attribute Writers

Attribute Writers

This lesson briefs over attribute writers and their connection with instance variables.

Setting information

Imagine in our application a person not only needs a name, but also a password. However, let’s also imagine that, at the time of the creation of a new person instance, this password is not yet known. (Who would give a toddler an email password anyway?)

Instead we want to be able to tell the person object about its email password later.

We can do this like so:

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class Person
  def initialize(name)
    @name = name
  end
  def name
    @name
  end
  def password=(password)
    @password = password
  end
end

Assigning Local Variable to Instance Variable

As you can see, ...

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