How to assign one array to another in Ruby (so that they are different objects)?

Question

ruby

There are for example arrays:
list = [1,2,3]
I create an array list2 =[] I
assign list2 << list
I delete an element from the array list2.delete(1)
This element is also deleted in list.
As I understand it, you need to use Marshal.dump here, but I tried it - it doesn't work.
How to solve the problem?

Answer 1

list2 = Array.new(list)
as an option

Answer 2

list2 = list.dup