On Tue, Apr 10, 2018 at 1:32 AM Alex Dvoretskiy <advoretski...@gmail.com>
wrote:
> Why there is no difference if the last comma exists?
Because the language specification allows to omit the last comma before the
closing '}':
LiteralValue = "{" [ ElementList [ "," ] ] "}" .
See: https://golang.org/ref/spec#LiteralValue
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