func HasLetters(s string) bool {
	for _, r := range s {
		if unicode.IsLetter(r) {
			return true
		}
	}
	return false
}
// HasLetters determines if a string contains any letters
HasLetters determines if a string contains any letters
// HasLetters determines if a string contains any letters
func HasLetters(s string) bool {
	for _, r := range s {
		if unicode.IsLetter(r) {
			return true
		}
	}
	return false
}
func HasLetters ( s string ) bool { for _ , r := range s { if unicode . IsLetter ( r ) { return true } } return false }
HasLetters determines if a string contains any letters
HasLetters determines if a string contains any letters