http://qs321.pair.com?node_id=1106297


in reply to syntax of Data::Dump

oct , perlquote, http://perldoc.perl.org/perlrebackslash.html#Octal-escapes, perlnumber, octal
$ perl -le " print 041 " 33 $ perl -le " print chr 041 " ! $ perl -le " print chr 33 " ! $ perl -le " print ord q{!} " 33

So the integer 33 is written in octal as 041, and if you chr 33 you get !

Make sense?

In a double quoted string 041 is 041, but \041 is chr 33 (octal escape)

$ perl -le " print qq{041} " 041 $ perl -le " print qq{\041} " !