If you want to modify arguments passed to a subroutine you have to assign to $_[1] or so directly.

However in many cases this is considered rather bad style, and needs to be documented very well.

If you have the option, consider returning a data structure from the subroutine instead.

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

In reply to Re: Create a reference in a sub and pass it back? by moritz
in thread Create a reference in a sub and pass it back? by Tharg

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