> And in cases where a function returns an error and a value (where the error generally indicates the validity of the value), you'll get a compile error if you don't check the error.

This compiles:

    package main
    import "errors"
    func main() {
        x, err := f()
        if err != nil {
            return
        }
        y, err := g()
        h(x, y)
    }
    func f() (x int, err error) { return 1000, nil }
    func g() (y int, err error) { err = errors.New("boo"); return }
    func h(x, y int) { println(x/y) }

(I do write Go most days and rather like it, but apologists for its weak parts are legion)