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Comment by chubot | Hacker News Reader

I kinda agree, but I also think then you want unquoted keys

   {name: "value"}

And then maybe 123_456 syntax

It's a slippery slope ... pretty soon it's hard to write a JSON parser, and there are more bugs

The trailing comma one is trivial, I'll grant that

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Trailing commas a very highly impactful to the users, and trivial to the language writers.

The 123_456 syntax comes close to that, but is much less impactful.

None of those will make the language hard to parse.

As much as I think it's annoying I think no trailing commas enforces good coding hygiene and basically forces you to use a real encoder rather than as hoc string manipulations.

This is such a bad take

Care to like, elaborate? Stopping people from doing brittle stuff like

    print("{")
    for elem in list:
        print('"key": "value",')
    print("}")

seems like immediate worth.

That's not a very big hurdle to overcome, though:

    print("{")
    contents = ""
    for elem in list:
      contents += '"key":  "value",'
    print(contents[:-1])
    print("}")

You are talking about data transfer encoding. Configuration languages are a completely different beast.

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