szabgab has asked for the wisdom of the Perl Monks concerning the following question:
I wanted to write an article about dualvars and list all the existing dualvars in Perl. I know only about $! but Scalar::Util claims that even that is not dualvar.
prints 1 so I doc of Scalar::Util incorrect.say isdual $!
Are there other dualvars in perl core? Do you know any dualvars in CPAN modules?
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