I've seen plenty of questions about returning two values or returning a value and doing something as well... in this small piece of code in the Class::Base docs we see:

# let's make 'foobar' a mandatory argument
        $self->{ foobar } = $config->{ foobar }
            || return $self->error("no foobar argument");
[download]

and the beauty is in return $self->error("no foobar argument");

Of course, the beast is the use of || instead of or, but let's sweep that under the rug.

Notice how his method gets two things done for him. He sets the value of the error for later inspection by the caller. And then the error method returns undef as a way of signalling failure.

Yet another slik tekneek for us 2 beehold.

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