[swift-evolution] [Review] SE-0084: Allow trailing commas in parameter lists and tuples

[Vladimir.S]

In this case (if this is a such good feature) IMO we should think about 
making the trailing commas *required*. In this way we will be consistent in 
either do we have trailing commas in Swift or don't. Otherwise we'll have a 
zoo in our sources/projects.

I don't think we need to have the same rules for commas "everywhere we have 
comma-delimited syntax".

On 11.05.2016 19:47, Joe Groff via swift-evolution wrote:
> +1 from me. We should be consistent in either accepting or rejecting
> trailing commas everywhere we have comma-delimited syntax. I'm in favor of
> accepting it, since it's popular in languages where it's supported to
> enable a minimal-diff style, so that changes to code don't impact
> neighboring lines for purely syntactic reasons. If you add an argument to a
> function, without trailing comma support, a comma has to be added to dirty
> the previous line: