Attributes in class

ruby-talk
1

Hi
Please help someone that knows C++ , and my question :
Does "attribute" in ruby is same as "private member" in c++ ? if no
please exactly explain me what is the concept of "attribute" in ruby?

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2

Amir Ebrahimifard wrote:

Hi
Please help someone that knows C++ , and my question :
Does "attribute" in ruby is same as "private member" in c++ ? if no
please exactly explain me what is the concept of "attribute" in ruby?

i thing you are talking about rails model
attribute is a instance variable of that class

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3

Amir Ebrahimifard wrote:

Hi
Please help someone that knows C++ , and my question :
Does "attribute" in ruby is same as "private member" in c++ ? if no
please exactly explain me what is the concept of "attribute" in ruby?

You're perhaps thinking of accessor methods. The following code:

class Foo
  attr_accessor :bar
end

does effectively the same as this:

class Foo
  def bar
    @bar
  end
  def bar=(val)
    @bar = val
  end
end

For learning about the basics of Ruby, I strongly recommend the book
Programming Ruby. The first edition is available to view online for
free:
http://www.ruby-doc.org/docs/ProgrammingRuby/

Since you're already a programmer you should find this very accessible.

HTH,

Brian.

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