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$obj = MyClass->new( %params);
$obj = MyClass::new( 'MyClass', %params);

   qtyTotal=>sub{return &qtyTotal('phrase 1', @_);}

$\ = $/; # see perlvar
sub b { print join" ",@_ }
...
1 2 3
got
got 1 2 3

sub b { print join" ", @_ } 
"b"->(1..3)