[Interest] Help, please !!!

[Scott Aron Bloom]

Nope.  That was not the issue.  The issue was that when you append list
A into list B, you can't get to list A because what's inside list B is a
copy of A, not A itself.  You might want to read again from the first
post.

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Nope.. not at all.. 

The problem is with your testcase Nikos... NOT implicit sharing..

listOfInts.append(10);

Expliticly PREVENTS the modification of the listOfInts variable.

It takes in a const object reference, Guarenteeing the original will NOT
be modified.. And implying that any modification to the original will
not effect the copy as well..

Scott