accessing instance variables from an inherited class

[aidy]

Hi,

The below code accesses the value of an instance variable

class Object_References
attr_reader bj_1, bj_2

def initialize
@obj_1 = "Object_1"
@obj_2 = "Object_2"
end

end

ref = Object_References.new
puts ref.obj_1
puts ref.obj_2

But how can I access the same value in a subclass?

class Whatever < Object_References

#how can I access the above objects variables here

end

Thanks

Aidy

 

[Stefano Crocco]

Alle venerd=EC 16 novembre 2007, aidy ha scritto:

Hi,

The below code accesses the value of an instance variable

class Object_References
attr_reader bj_1, bj_2

def initialize
@obj_1 =3D "Object_1"
@obj_2 =3D "Object_2"
end

end

ref =3D Object_References.new
puts ref.obj_1
puts ref.obj_2

But how can I access the same value in a subclass?

class Whatever < Object_References

#how can I access the above objects variables here

end

Thanks

Aidy

You can access them as you would in the base class:

class A

def initialize
@x =3D 2
end

end

class B < A
=20
def puts_x
puts @x
end

def x=3D(value)
@x =3D value
end

end

b =3D B.new
b.puts_x
b.x=3D3
b.puts_x

Output:
2
3

I hope this helps

Stefano