Technically anonymous I suppose because the struct is not named, but the article is mostly about type inference while your example has every type made explicit.
I was just saying that for completeness, Go should probably be mentioned in that list since it's become a pretty significant language.
(For the record, I'm an absolute Go hater, but I'm also a PL enthusiast, so...)
That said, I didn't know about Go's support for inline struct definitions like that!