Overloading in Perl / Using overload.pm

Magical Autogeneration

• You don't need to define all of these operations
• Perl can autogenerate many of them
• ++ can be derived from +
• += can be derived from +
• - (unary) can be derived from - (binary)
• All numeric comparisons can be derived from <=>
• All string comparisons can be derived from cmp