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I've gotten bit by trailing commas enough times (both manual edits and writing generators) that I absolutely expect any reasonable syntax to tolerate them. It's

by kortex 3y ago

I've gotten bit by trailing commas enough times (both manual edits and writing generators) that I absolutely expect any reasonable syntax to tolerate them. It's just so much easier and more consistent to tolerate them.

jen20 3y ago
As importantly, it reduces the noise in diffs when an item is added to a sequence.
- masklinn 3y ago
  You can use prefix separators for that. Haskell-style.
  - jayd16 3y ago
    Doesn't that just push the problem to the other side of the list?
    - Skeime 3y ago
      It does. However, it’s much more common to edit the end of a list, in my experience. Still, a syntax that is entirely uniform (like trailing commas) is preferable, in my opinion.
panick21_ 3y ago
That's what Clojure got right. Comma is whitespace. When you print a datastructure, it has commas. But they don't effect reading of that structure. Its brilliant and practical.
themerone 3y ago
This is why I switched to leading commas.