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This is an excerpt from the latest version perlfaq7.pod, which
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7.21: How do I redefine a builtin function, operator, or method?

Why do you want to do that? :-)

If you want to override a predefined function, such as open(), then
you'll have to import the new definition from a different module. See
"Overriding Built-in Functions" in perlsub. There's also an example in
"Class::Template" in perltoot.

If you want to overload a Perl operator, such as "+" or "**", then
you'll want to use the "use overload" pragma, documented in overload.

If you're talking about obscuring method calls in parent classes, see
"Overridden Methods" in perltoot.


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