Linked List Problem in C#

[person]

In this problem, foo and bar are both single linked lists. Next is a member of the list which points to the next element in the list.

code:

foo = bar;                              Console.WriteLine (bar.Next==null); foo.Next = null; Console.WriteLine (bar.Next==null);

When I run this portion of the code in my program, the output is:

False
True

Why is this?

[person]

Btw, the linked lists are instances of a class called List which contains a variable to hold a value and a variable to hold a variable of type List which points to another value and List. So I don't think this is an issue of pointers since I don't believe they are pointing to the same location in memory.

[OneOffDriveByPoster]

person @ Sat Nov 22, 2008 7:38 pm wrote:

code:

foo = bar;

Why do you believe that foo would be different from bar after that?

[rdrake]

Foo is not a clone of bar, it's just a reference to it. Try making the line say something like foo = bar.Clone() and see what happens.