CPAN::Groonga

a generic wrapper for transport encodings. This function can be
overridden to use transports like JSON or XML. The standard is a
compressed Data::Serialiser stream.

=head2 decode

The reverse of enco

valid_command,
            'user'    => qr/^[\w-]{3,100}/,
            'format'  => qr/^[yaml|xml|json]/,
            'pass'    => qr/^[\w]{10,100}$/,
        },

    };

    my $dfv = Data::FormValid