C# empty term - Why is this allowed? (odd syntax)

Asked Jul 30 '14 at 11:35

Active Jul 30 '14 at 11:35

Viewed 54 times

I was in a situation wherein I had to regex-parse some C# code for a little task, and was tripped-up by something which I would have assumed was C# syntax error:

var moop = new { Moop = "Hello", };

This compiles correctly.

My question - What purpose does allowing a trailing comma / empty term serve?

It's valid in arrays, too:

var arr = new[]{1,2,3,};

asked Jul 30 '14 at 11:35

Dave Bish

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_"What purpose does allowing a trailing comma / empty term serve?"_ - probably to make copy paste new elements easily ;) – Konrad Kokosa Jul 30 '14 at 11:37
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If they take a dedicated line each, then adding another element would cause 1 line diff, instead of 2 – zerkms Jul 30 '14 at 11:37
This can be useful where code is autogenerated, eg in WinForms. No edge case for the last element. – Asad Saeeduddin Jul 30 '14 at 11:38

C# empty term - Why is this allowed? (odd syntax)

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