> Oh, and I think he missed the most surprising thing about Go for newcomers: that "if" creates scope! Go is block scoped, and if statements are blocks. I don'

> Oh, and I think he missed the most surprising thing about Go for newcomers: that "if" creates scope! Go is block scoped, and if statements are blocks. I don't see this as surprising. I agree some set operations would be nice, maybe using an interface like Sort, but you can use a map as a basic generic set data structure. This is how many language implement a set anyway.