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Self-referential QR code / JAPH

by davido (Cardinal)
on Jun 01, 2020 at 03:40 UTC ( [id://11117544] : obfuscated . print w/replies, xml ) Need Help??

A proper JAPH this is not. And there's not really any obfu here but I thought this was a fun abuse of QR codes and Perl:

use Term::QRCode;for(DATA){shift&&do{seek$_,0,undef$/};print Term::QRC +ode->new->plot(<$_>)} __DATA__ Just another Perl hacker,

You'll need to install Term::QRCode, which will fail unless you have libqrencode-dev installed (Debian, Ubuntu).


$ perl qrjaph self # Generate a QR that contains this script as its en +coded text. $ perl qrjaph # Generate a QR that contains just the text Just an +other Perl hacker,

The output isn't something I can copy/paste here, so you'll either have to give it a try or take my word for it. ;) This constitutes a violation of several of the rules of JAPH scripts: It relies on several non-Perl-core libraries. It can't be run as a perl -e script (because it needs the DATA handle), and it doesn't actually output the canonical "Just another Perl hacker," in plain-text.