Re: prototypes parens/parenthesis hash initialization/declaration / Too many arguments for / $$

[AnomalousMonk]

Why not try a different approach?

>perl -wMstrict -MData::Dump -le
"sub ff {
   return
     map { $_ => join ' ', m{ \d }xmsg }
     map { m{ \A \d{2} \z }xms ? $_ : die qq{bad arg: '$_'} }
     @_;
   }
 ;;
 my %f = ff(12, 34);
 dd \%f;
"
{ 12 => "1 2", 34 => "3 4" }