}

type MySlice []int
type MyFloatSlice []float64

type _SliceOf[E any] interface {
	~[]E
}

func _DoubleElems[S _SliceOf[E], E Number](s S) S {
	r := make(S, len(s))
	for i, v := range s {
		r[i] = v + v
	}
	return r
}

// Test use of untyped constant in an expression with a generically-typed parameter
func _DoubleElems2[S _SliceOf[E], E Number](s S) S {
	r := make(S, len(s))
	for i, v := range s {