How to change objects in heap?

I’m novice at ruby and faced to a little problem.

I’ll explain on the example:

I have a few references to an object

a = A.new
b = a
c = a
d = a

I want to change object of class A with object of class B here

if I do

a = B.new

b,c,d will be still refer to object A

How can I do it?

Dmitry Regent wrote:

I’m novice at ruby and faced to a little problem.

I’ll explain on the example:

I have a few references to an object

a = A.new
b = a
c = a
d = a

I want to change object of class A with object of class B here

if I do

a = B.new

b,c,d will be still refer to object A

How can I do it?

a = [10]
b = a
c = a

a[0] = 20
puts b[0]
puts c[0]

–output:–
20
20

a = [10]
b = a
c = a

a[0] = 20
puts b[0]
puts c[0]

–output:–
20
20

This way you are correcting existed object.
But if you will do

a = Array.new

a => []

but!

b = [20]
c = [20]

I want to get C++ analog in ruby for operation with pointer.
When i can destract object and constract new with this pointer.

On Fri, 18 Apr 2008 14:33:48 -0500, Dmitry Regent wrote:

20
c = [20]

I want to get C++ analog in ruby for operation with pointer. When i can
destract object and constract new with this pointer.

Ruby doesn’t have pointers or references the way C++ does. To get
similar
behavior, you can mimic it using a 1-element array. That’s what 7stud–
was demonstrating, though some description of the theory would have
helped.

–Ken

This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs