$_[0]=\%q; sets the first argument on the caller side to \%q. Which only makes sense if you pass a scalar variable as first argument.

Maybe it would be more helpful if you wrote what the underlying reason is for doing what you try to do. Maybe that way we can suggest a better solution. See also XY Problem.

Perl 6 - links to (nearly) everything that is Perl 6.

In reply to Re^3: deferencing an hash in a subroutine by moritz
in thread deferencing an hash in a subroutine by saintex

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