code: func isTruthyValue(s string) bool {
  	chl := strings.ToLower(s)
  	return chl == "true" || chl == "yes" || chl == "1" || chl == "on" || chl == "t"
  }
docs: // isTruthyValue returns true if a given string is any of "truthy" value,
  // i.e. "true", "yes", "1", "on", or "t".