code: func SampleMin(values []int64) int64 {
  	if 0 == len(values) {
  		return 0
  	}
  	var min int64 = math.MaxInt64
  	for _, v := range values {
  		if min > v {
  			min = v
  		}
  	}
  	return min
  }
docs: // SampleMin returns the minimum value of the slice of int64.