Are trailing commas in Perl a bad practice? [closed]

Answer 1

I favor leading commas, though I know its rather unpopular and seems to irritate the dyslexic. I also haven't been able to find a perltidy option for it. It fixes the line-change-diff problem as well (except for the first line, but that's not usually the one being changed in my experience), and I adore the way the commas line up in neat columns. It also works in languages that are white-space agnostic but don't like trailing commas on lists quite neatly. I think I learned this pattern while working with javascript...

my $hash_ref =
  { key1    => 'a'
  , key2    => 'b'
  , key3    => 'c'
  };

my $array_ref = 
  [ 1
  , 2
  , 3
  ];