golang circular seq

main.go

func circularSeq[T any](values []T) iter.Seq[T] {
	i := 0
	return func(yield func(T) bool) {
		value := values[i]
		i++
		if i == len(values) {
			i = 0
		}
		if !yield(value) {
			return
		}
	}
}