##
{ "nothing" => "_undef",
"" => "empty",
"zero" => 0,
}
####
_undef: 11,363,636.36/s
empty: 9,174,311.93/s
nothing: 20,000,000.00/s
zero: 166,666,666.67/s
####
sub nothing { return (); }
nothing() for 0..100_000_000;
warn time()-$^T;