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Using regular expressions is so Perl. Sometimes, however, it gets a little
overwhelming. Use named paths if you anticipate that you or someone else will
ever want to maintain your code.
 
=head4 Explicit
 
    $r->add( "/update/:id", "update" );
 
    # Later
    sub update {
        my ( $self, $id ) = @_;
        # Do something with $id
    }
 
=head4 Optional
 
    $r->add( "/person/?name", sub {
        my ( $self, $name ) = @_;
        return "I am " . $name // "nobody";
    });