comment on

This is built in to perl6. In perl5, use Params::Validate. The one thing you'll notice has really changed is that @array_param is now passed as a reference. You can't just say func( "...", @ary, ... ) and have @ary passed as a distinct value without doing some really nasty things. That is, prototypes. You really, really don't want to use them in perl5. They were a mistake to have included (except maybe the & prototype) in perl at all.

functionname( "...", \ @bar, "..." );

use Params::Validate ':all';

sub functionname {
    my ( $string_param, $array_param, $other_string_param )
      = validate_pos( @_,
                      { type => SCALAR },
                      { type => ARRAYREF },
                      { type => SCALAR } );
}
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In reply to Re: Predefining sub Parameters by diotalevi
in thread Predefining sub Parameters by willyyam

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