A pointer (or reference) in Matlab

Get the behavior of a pointer.

Create a pointer:
o = ptr();
Do anything you want with it:
o.d.msg = 'hi';
o.d.A = randn(10);
p = o;
p.d.msg = 'hello';
disp(o.d.msg); % 'hello'
Think of '.d.' as the C language's '->' operator. Write a function that acts on it:
function DoSomething(o)
o.d.A(end,end) = 10;
end
Make sure to delete it:
delete(o);
Since o and p point to the same object, p is now invalid just like o.