I consider myself to be an extremely heavy Perl programmer who is familiar enough with C, commandline arguments, and writes shell scripts in both bash and Perl on a semi-regular basis (less now than before). I still had to read the manual for the <> operator. Yes, it's dwimmy. Yes, it's good. But, I still comment usages of vec(), 4-arg splice(), and select(). Just because they are things I occasionally have to look up. The comment might just be a link to perldoc.perl.org, but that's often enough to point out that this code might be a tiny bit funky.