Question on instance variable access

ruby-talk
1

I came accross a problem which made me wonder. Sort of about dotting
into a variable.
I could find the answer in my ruby book. How would I do the access at
the end here.
I know I could probably use accessors, but is that the only way to do
it ?

class A

def initialize
@num = 3
end

end

class B

def initialize
@friend = A.new
end

myobj = B.new

# syntax here ? Is this allowed, is it done another way ?
x = myobj.@friend.@num

2

I know I could probably use accessors, but is that the only way to do
it ?

Yes. In Ruby all instance variables are private.

···

--
Phillip Hutchings
http://www.sitharus.com/

3

The code would look like:
myobj.instance_variable_get(:@friend).instance_variable_get(:@num)

···

On 7/24/06, surfunbear@yahoo.com <surfunbear@yahoo.com> wrote:

I came accross a problem which made me wonder. Sort of about dotting
into a variable.
I could find the answer in my ruby book. How would I do the access at
the end here.
I know I could probably use accessors, but is that the only way to do
it ?

class A

def initialize
@num = 3
end

end

class B

def initialize
@friend = A.new
end

myobj = B.new

# syntax here ? Is this allowed, is it done another way ?
x = myobj.@friend.@num

--
--------
David Pollak's Ruby Playground
http://dppruby.com