CSE 341 -- S. Tanimoto                                                    Perl Arrays, Functions, Lists, Refs, Etc
18
References (smart pointers)
A reference is a pointer that is used to access some Perl data or function.
There is a reference count for each item.
$scalarref = \$scalar;
$five = 5;
$fiveref = \$five;
print 1 + $$fiveref;    # prints 6.