http://www.perlmonks.org?node_id=481623


in reply to Perl Best Practices for naming variables

Other than use plural for collections (array/hash), it is also nice if you can name the "iterator" wisely:

for my $friend (@friends) { #the relationship between $friend and @fri +ends are visually clear ... }

And

for my $person (keys(%phone_numbers)) { #$person clearly tells the mea +ning of the hash key $phone_numbers{$person}... }