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foreach $1by choroba (Cardinal) |
on Jun 05, 2020 at 21:49 UTC ( [id://11117743]=perlmeditation: print w/replies, xml ) | Need Help?? |
When answering a question on StackOverflow, I noticed an interesting anti-idiom (antidiom?) I haven't seen before (and haven't thought of trying):
Interestingly, you can use it under strict and warnings and Perl doesn't protest. But $1 is aliased to the elements of the array and loses its magic behaviour:
Can you guess what the output is?
So, if you ever get the idea of using special variables for something else than what they were designed to, stop.
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
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