Addendum to explain what the &x2 call does

> Subroutines may be called recursively. If a subroutine is called using the & form, the argument list is optional, and if omitted, no @_ array is set up for the subroutine: the @_ array at the time of the call is visible to subroutine instead. This is an efficiency mechanism that new users may wish to avoid.

Source perlsub

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Je suis Charlie!

In reply to Re^3: parm#4 from caller == !"eval" ? by LanX
in thread Re: parm#4 from caller == !"eval" ? by perl-diddler

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