validate_fields(EACH, P_DLRUOM);

##</code><code>##

validate_fields('EACH', 'P_DLRUOM');

##</code><code>##

validate_fields( qw( EACH P_DLRUOM ) );

##</code><code>##

foo( { arg1 => 'val1', arg2 => 'val2' } );

sub foo{
    my $arg_ref = shift;

    # do some stuff with $arg_ref->{arg1} and
    # $arg_ref->{arg_2}

...

    return;
}

##</code><code>##

perl -e 'split//,q{john hurl, pest caretaker}and(map{print @_[$_]}(join(q{},map{sprintf(qq{%010u},$_)}(2**2*307*4993,5*101*641*5261,7*59*79*36997,13*17*71*45131,3**2*67*89*167*181))=~/\d{2}/g));'